Problem details:
I may have nuked all of my song and skin collections(in Lazer) by opening an older version of osu lazer on a different drive. It was a stupid mistake on my part, I had an inkling that something might go wrong since Lazer fetches maps and songs differently than stable via hashing. Fortunately, I still had my stable client so I had a sort of backup in case things like this happens...

Video or screenshot showing the problem:
----------------------------------------------------------
runtime Log (LogLevel: Verbose)
Running osu 2024.906.2.0 on .NET 8.0.8
Environment: Windows (Microsoft Windows NT 10.0.22631.0), 16 cores
----------------------------------------------------------
2025-04-23 12:23:35 [verbose]: Starting legacy IPC provider...
2025-04-23 12:23:37 [verbose]: 🖼️ Configuration renderer choice: Automatic
2025-04-23 12:23:37 [verbose]: 🖼️ Renderer fallback order: [ Direct3D 11, Direct3D 11 (Experimental), OpenGL, Vulkan (Experimental) ]
2025-04-23 12:23:37 [verbose]: 🖼️ Initialising "Veldrid" renderer with "Direct3D11" surface
2025-04-23 12:23:38 [verbose]: SDL2 Initialized
2025-04-23 12:23:38 [verbose]: SDL2 Version: 2.31.0
2025-04-23 12:23:38 [verbose]: SDL2 Revision: SDL-2.31.0-g5d80179
2025-04-23 12:23:38 [verbose]: Updated display mode to desktop resolution: 1920x1080@180, SDL_PIXELFORMAT_RGB888
2025-04-23 12:23:38 [verbose]: Direct3D 11 Initialized
2025-04-23 12:23:38 [verbose]: Direct3D 11 Feature Level: 11.1
2025-04-23 12:23:38 [verbose]: Direct3D 11 Adapter: AMD Radeon RX 580 2048SP
2025-04-23 12:23:38 [verbose]: Direct3D 11 Dedicated Video Memory: 8170 MB
2025-04-23 12:23:38 [verbose]: Direct3D 11 Dedicated System Memory: 0 MB
2025-04-23 12:23:38 [verbose]: Direct3D 11 Shared System Memory: 16346 MB
2025-04-23 12:23:38 [verbose]: UseStructuredBuffers: True
2025-04-23 12:23:38 [verbose]: 🖼️ Renderer initialised!
2025-04-23 12:23:38 [verbose]: Host execution state changed to Running
2025-04-23 12:23:38 [verbose]: Execution mode changed to MultiThreaded
2025-04-23 12:23:39 [verbose]: 🔈 BASS initialised
2025-04-23 12:23:39 [verbose]: BASS version: 2.4.17.0
2025-04-23 12:23:39 [verbose]: BASS FX version: 2.4.12.6
2025-04-23 12:23:39 [verbose]: BASS MIX version: 2.4.12.0
2025-04-23 12:23:39 [verbose]: Device: Default
2025-04-23 12:23:39 [verbose]: Driver:
2025-04-23 12:23:39 [verbose]: Update period: 5 ms
2025-04-23 12:23:39 [verbose]: Device buffer length: 10 ms
2025-04-23 12:23:39 [verbose]: Playback buffer length: 100 ms
2025-04-23 12:23:39 [verbose]: 🔈 BASS initialised
2025-04-23 12:23:39 [verbose]: BASS version: 2.4.17.0
2025-04-23 12:23:39 [verbose]: BASS FX version: 2.4.12.6
2025-04-23 12:23:39 [verbose]: BASS MIX version: 2.4.12.0
2025-04-23 12:23:39 [verbose]: Device: Default
2025-04-23 12:23:39 [verbose]: Driver:
2025-04-23 12:23:39 [verbose]: Update period: 5 ms
2025-04-23 12:23:39 [verbose]: Device buffer length: 10 ms
2025-04-23 12:23:39 [verbose]: Playback buffer length: 100 ms
2025-04-23 12:23:40 [error]: Realm startup failed with unrecoverable error; starting with a fresh database. A backup of your database has been made.
2025-04-23 12:23:40 [error]: Realms.Exceptions.RealmException: Database has an uned version (24) and cannot be upgraded
2025-04-23 12:23:40 [error]: at Realms.NativeException.ThrowIfNecessary()
2025-04-23 12:23:40 [error]: at Realms.SharedRealmHandle.Open(Configuration configuration)
2025-04-23 12:23:40 [error]: at Realms.RealmConfiguration.CreateHandle(Configuration& configuration)
2025-04-23 12:23:40 [error]: at Realms.RealmConfigurationBase.CreateRealm()
2025-04-23 12:23:40 [error]: at Realms.Realm.GetInstance(RealmConfigurationBase config)
2025-04-23 12:23:40 [error]: at osu.Game.Database.RealmAccess.getRealmInstance()
2025-04-23 12:23:40 [error]: at osu.Game.Database.RealmAccess.prepareFirstRealmAccess()
2025-04-23 12:23:40 [verbose]: Beginning realm file store cleanup
2025-04-23 12:23:40 [verbose]: Finished realm file store cleanup (0 of 0 deleted)
2025-04-23 12:23:40 [verbose]: Opened realm "C:\s\Kira\AppData\Roaming\osu\client.realm" at version 42
2025-04-23 12:23:40 [verbose]: 🖍️ Shader Texture2D/Texture loaded from cache!
2025-04-23 12:23:41 [verbose]: 🖍️ Shader Texture2D/CircularProgress loaded from cache!
2025-04-23 12:23:41 [verbose]: Updated display mode to fullscreen resolution: 1920x1080@180, SDL_PIXELFORMAT_RGB888
2025-04-23 12:23:41 [verbose]: Loading FPSCounter...
2025-04-23 12:23:41 [verbose]: Loaded FPSCounter!
2025-04-23 12:23:41 [verbose]: Loading OsuLogo...
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (100)
2025-04-23 12:23:41 [verbose]: 🖍️ Shader Texture2D/TriangleBorder loaded from cache!
2025-04-23 12:23:41 [verbose]: Loaded OsuLogo!
2025-04-23 12:23:41 [verbose]: Loading StatisticsWatcher...
2025-04-23 12:23:41 [verbose]: 📺 OsuScreenStack#197(depth:1) loading Loader#343
2025-04-23 12:23:41 [verbose]: Loaded StatisticsWatcher!
2025-04-23 12:23:41 [verbose]: Loading Toolbar...
2025-04-23 12:23:41 [verbose]: 📺 OsuScreenStack#197(depth:1) entered Loader#343
2025-04-23 12:23:41 [verbose]: 🖍️ Shader Texture2D/Blur loaded from cache!
2025-04-23 12:23:41 [verbose]: 🖍️ Shader CursorTrail/Texture loaded from cache!
2025-04-23 12:23:41 [verbose]: 🖍️ Shader Texture2D/FastCircle loaded from cache!
2025-04-23 12:23:41 [verbose]: 🖍️ Shader Texture3D/Texture loaded from cache!
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (200)
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (300)
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (400)
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (500)
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (600)
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (100)
2025-04-23 12:23:41 [verbose]: Loaded Toolbar!
2025-04-23 12:23:41 [verbose]: Loading VolumeOverlay...
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (700)
2025-04-23 12:23:41 [verbose]: Loaded VolumeOverlay!
2025-04-23 12:23:41 [verbose]: Loading OnScreenDisplay...
2025-04-23 12:23:41 [verbose]: Texture -'s queue is large (800)
2025-04-23 12:23:42 [verbose]: Loaded OnScreenDisplay!
2025-04-23 12:23:42 [verbose]: Loading NotificationOverlay...
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (900)
2025-04-23 12:23:42 [verbose]: Loaded NotificationOverlay!
2025-04-23 12:23:42 [verbose]: Loading LegacyImportManager...
2025-04-23 12:23:42 [verbose]: Loaded LegacyImportManager!
2025-04-23 12:23:42 [verbose]: Loading ScreenshotManager...
2025-04-23 12:23:42 [verbose]: Loaded ScreenshotManager!
2025-04-23 12:23:42 [verbose]: Loading VelopackUpdateManager...
2025-04-23 12:23:42 [verbose]: Loaded VelopackUpdateManager!
2025-04-23 12:23:42 [verbose]: Loading FirstRunSetupOverlay...
2025-04-23 12:23:42 [verbose]: Loaded FirstRunSetupOverlay!
2025-04-23 12:23:42 [verbose]: Loading ManageCollectionsDialog...
2025-04-23 12:23:42 [verbose]: Texture 's queue is large (100)
2025-04-23 12:23:42 [verbose]: Loaded ManageCollectionsDialog!
2025-04-23 12:23:42 [verbose]: Loading BeatmapListingOverlay...
2025-04-23 12:23:42 [verbose]: Texture 's queue is large (100)
2025-04-23 12:23:42 [verbose]: Loaded BeatmapListingOverlay!
2025-04-23 12:23:42 [verbose]: Loading DashboardOverlay...
2025-04-23 12:23:42 [verbose]: Loaded DashboardOverlay!
2025-04-23 12:23:42 [verbose]: Loading NewsOverlay...
2025-04-23 12:23:42 [verbose]: Loaded NewsOverlay!
2025-04-23 12:23:42 [verbose]: Loading RankingsOverlay...
2025-04-23 12:23:42 [verbose]: Loaded RankingsOverlay!
2025-04-23 12:23:42 [verbose]: Loading ChannelManager...
2025-04-23 12:23:42 [verbose]: Loaded ChannelManager!
2025-04-23 12:23:42 [verbose]: Loading ChatOverlay...
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (100)
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (200)
2025-04-23 12:23:42 [verbose]: Loaded ChatOverlay!
2025-04-23 12:23:42 [verbose]: Loading MessageNotifier...
2025-04-23 12:23:42 [verbose]: Loaded MessageNotifier!
2025-04-23 12:23:42 [verbose]: Loading SettingsOverlay...
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (300)
2025-04-23 12:23:42 [verbose]: Loaded SettingsOverlay!
2025-04-23 12:23:42 [verbose]: Loading ChangelogOverlay...
2025-04-23 12:23:42 [verbose]: Loaded ChangelogOverlay!
2025-04-23 12:23:42 [verbose]: Loading ProfileOverlay...
2025-04-23 12:23:42 [verbose]: Loaded ProfileOverlay!
2025-04-23 12:23:42 [verbose]: Loading BeatmapSetOverlay...
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (400)
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (500)
2025-04-23 12:23:42 [verbose]: Loaded BeatmapSetOverlay!
2025-04-23 12:23:42 [verbose]: Loading WikiOverlay...
2025-04-23 12:23:42 [verbose]: Loaded WikiOverlay!
2025-04-23 12:23:42 [verbose]: Loading SkinEditorOverlay...
2025-04-23 12:23:42 [verbose]: Loaded SkinEditorOverlay!
2025-04-23 12:23:42 [verbose]: Loading Overlay...
2025-04-23 12:23:42 [verbose]: Loaded Overlay!
2025-04-23 12:23:42 [verbose]: Loading NowPlayingOverlay...
2025-04-23 12:23:42 [verbose]: Texture -'s queue is large (600)
2025-04-23 12:23:42 [verbose]: Loaded NowPlayingOverlay!
2025-04-23 12:23:42 [verbose]: Loading CreationOverlay...
2025-04-23 12:23:42 [verbose]: 📺 ScreenStack#446(depth:1) scheduling push ScreenWelcome#644
2025-04-23 12:23:42 [verbose]: Loaded CreationOverlay!
2025-04-23 12:23:42 [verbose]: Loading DialogOverlay...
2025-04-23 12:23:42 [verbose]: Loaded DialogOverlay!
2025-04-23 12:23:42 [verbose]: Loading MedalOverlay...
2025-04-23 12:23:42 [verbose]: Loaded MedalOverlay!
2025-04-23 12:23:42 [verbose]: Loading BackgroundDataStoreProcessor...
2025-04-23 12:23:42 [verbose]: Beginning background data store processing..
2025-04-23 12:23:42 [verbose]: Resetting star ratings for osu! (difficulty calculation version updated from 0 to 20220902)
2025-04-23 12:23:42 [verbose]: Finished resetting 0 beatmap sets for osu!
2025-04-23 12:23:42 [verbose]: Resetting star ratings for osu!taiko (difficulty calculation version updated from 0 to 20221107)
2025-04-23 12:23:42 [verbose]: Finished resetting 0 beatmap sets for osu!taiko
2025-04-23 12:23:42 [verbose]: Resetting star ratings for osu!catch (difficulty calculation version updated from 0 to 20220701)
2025-04-23 12:23:42 [verbose]: Finished resetting 0 beatmap sets for osu!catch
2025-04-23 12:23:42 [verbose]: Resetting star ratings for osu!mania (difficulty calculation version updated from 0 to 20230817)
2025-04-23 12:23:42 [verbose]: Loaded BackgroundDataStoreProcessor!
2025-04-23 12:23:42 [verbose]: Loading DetachedBeatmapStore...
2025-04-23 12:23:42 [verbose]: Finished resetting 0 beatmap sets for osu!mania
2025-04-23 12:23:42 [verbose]: Querying for beatmap sets to reprocess...
2025-04-23 12:23:42 [verbose]: Querying for beatmaps with missing hitobject counts to reprocess...
2025-04-23 12:23:42 [verbose]: Querying for scores to reprocess...
2025-04-23 12:23:42 [verbose]: Querying for scores that need total score conversion...
2025-04-23 12:23:42 [verbose]: Found 0 scores which require total score conversion.
2025-04-23 12:23:42 [verbose]: Querying for scores that need rank upgrades...
2025-04-23 12:23:42 [verbose]: Loaded DetachedBeatmapStore!
2025-04-23 12:23:42 [verbose]: Found 0 scores which require rank upgrades.
2025-04-23 12:23:42 [verbose]: Finished background data store processing!
2025-04-23 12:23:42 [verbose]: Current channel changed to #osu
2025-04-23 12:23:42 [verbose]: Invalidating working beatmap cache for nekodex - circles! (peppy)
2025-04-23 12:23:43 [verbose]: 📺 OsuScreenStack#197(depth:1) suspended Loader#343 (waiting on IntroCircles#566)
2025-04-23 12:23:43 [verbose]: 📺 OsuScreenStack#197(depth:2) entered IntroCircles#566
2025-04-23 12:23:43 [verbose]: 📺 BackgroundScreenStack#628(depth:1) loading BackgroundScreenDefault#184
2025-04-23 12:23:43 [verbose]: Game-wide working beatmap updated to nekodex - circles! (peppy)
2025-04-23 12:23:43 [verbose]: 📺 BackgroundScreenStack#628(depth:1) entered BackgroundScreenDefault#184
2025-04-23 12:23:43 [verbose]: 🌅 Global background change queued
2025-04-23 12:23:43 [verbose]: 🌅 Global background loading
2025-04-23 12:23:44 [verbose]: Requesting catch-up from 9004536
2025-04-23 12:23:44 [verbose]: Requesting any changes since last known queue id 9004536
2025-04-23 12:23:45 [verbose]: Requesting catch-up from 9004538
2025-04-23 12:23:45 [verbose]: Requesting any changes since last known queue id 9004538
2025-04-23 12:23:45 [verbose]: Catch-up complete at 9004538
2025-04-23 12:23:46 [verbose]: 📺 OsuScreenStack#197(depth:2) suspended IntroCircles#566 (waiting on MainMenu#613)
2025-04-23 12:23:46 [verbose]: 📺 OsuScreenStack#197(depth:3) entered MainMenu#613
2025-04-23 12:23:46 [verbose]: Received beatmap updates 1 updates with last id 9004538
2025-04-23 12:23:46 [verbose]: ⚠️ Realm startup failed with unrecoverable error; starting with a fresh database. A backup of your database has been made.
2025-04-23 12:23:46 [verbose]:
2025-04-23 12:23:46 [verbose]: This error has been automatically reported to the devs.
2025-04-23 12:23:46 [verbose]: ⚠️ You are now running osu! 2024.906.2-lazer.
2025-04-23 12:23:46 [verbose]: Click to see what's new!
2025-04-23 12:23:53 [verbose]: ButtonSystem's state changed from Initial to TopLevel
2025-04-23 12:23:54 [verbose]: ⚠️ ing update...
2025-04-23 12:23:58 [verbose]: ButtonSystem's state changed from TopLevel to Play
2025-04-23 12:23:59 [verbose]: 📺 OsuScreenStack#197(depth:3) suspended MainMenu#613 (waiting on PlaySongSelect#351)
2025-04-23 12:23:59 [verbose]: ButtonSystem's state changed from Play to EnteringMode
2025-04-23 12:23:59 [verbose]: 📺 OsuScreenStack#197(depth:4) loading PlaySongSelect#351
2025-04-23 12:23:59 [verbose]: decoupled ruleset transferred ("" -> "osu!")
2025-04-23 12:23:59 [verbose]: 📺 OsuScreenStack#197(depth:4) entered PlaySongSelect#351
2025-04-23 12:23:59 [verbose]: 📺 BackgroundScreenStack#628(depth:2) loading BackgroundScreenBeatmap#385
2025-04-23 12:23:59 [verbose]: 📺 BackgroundScreenStack#628(depth:2) suspended BackgroundScreenDefault#184 (waiting on BackgroundScreenBeatmap#385)
2025-04-23 12:23:59 [verbose]: 📺 BackgroundScreenStack#628(depth:2) entered BackgroundScreenBeatmap#385
2025-04-23 12:23:59 [verbose]: Song select updating selection with beatmap: null ruleset:osu
2025-04-23 12:23:59 [verbose]: Song select changing beatmap from "nekodex - circles! (peppy)" to "null"
2025-04-23 12:23:59 [verbose]: Game-wide working beatmap updated to please load a beatmap! - no beatmaps available!
2025-04-23 12:23:59 [verbose]: Song select decided to ensurePlayingSelected
2025-04-23 12:23:59 [verbose]: 🌅 Global background change queued
2025-04-23 12:24:03 [verbose]: Focus contention triggered by ManageCollectionsDialog.
2025-04-23 12:24:05 [verbose]: Focus contention triggered by ManageCollectionsDialog.
2025-04-23 12:24:06 [verbose]: Received beatmap updates 1 updates with last id 9004539
2025-04-23 12:24:08 [verbose]: Focus contention triggered by NotificationOverlay.
2025-04-23 12:24:12 [verbose]: 📺 BackgroundScreenStack#628(depth:1) exit from BackgroundScreenBeatmap#385
2025-04-23 12:24:12 [verbose]: 📺 BackgroundScreenStack#628(depth:1) resume to BackgroundScreenDefault#184
2025-04-23 12:24:12 [verbose]: 📺 OsuScreenStack#197(depth:3) exit from PlaySongSelect#351
2025-04-23 12:24:12 [verbose]: 📺 OsuScreenStack#197(depth:3) resume to MainMenu#613
2025-04-23 12:24:12 [verbose]: MusicController skipping next track to EnsurePlayingSomething
2025-04-23 12:24:12 [verbose]: Game-wide working beatmap updated to nekodex - circles! (peppy)
2025-04-23 12:24:12 [verbose]: 🌅 Global background change queued
2025-04-23 12:24:12 [verbose]: 🌅 Global background change queued
2025-04-23 12:24:12 [verbose]: ButtonSystem's state changed from EnteringMode to TopLevel
2025-04-23 12:24:13 [verbose]: 🌅 Global background loading
2025-04-23 12:24:13 [verbose]: ButtonSystem's state changed from TopLevel to Initial
2025-04-23 12:24:13 [verbose]: Focus contention triggered by DialogOverlay.
2025-04-23 12:24:15 [verbose]: ButtonSystem's state changed from Initial to TopLevel
2025-04-23 12:24:17 [verbose]: Scrolling to GameplaySection..
2025-04-23 12:24:18 [verbose]: Reattempting scroll to GameplaySection due to change in position
2025-04-23 12:24:18 [verbose]: Scrolling to GameplaySection..
2025-04-23 12:24:18 [verbose]: Scrolling to InterfaceSection..
2025-04-23 12:24:19 [verbose]: Finished scrolling to InterfaceSection!
2025-04-23 12:24:20 [verbose]: Scrolling to OnlineSection..
2025-04-23 12:24:20 [verbose]: Reattempting scroll to OnlineSection due to change in position
2025-04-23 12:24:20 [verbose]: Scrolling to OnlineSection..
2025-04-23 12:24:20 [verbose]: Scrolling to GraphicsSection..
2025-04-23 12:24:21 [verbose]: Scrolling to AudioSection..
2025-04-23 12:24:21 [verbose]: Scrolling to InputSection..
2025-04-23 12:24:22 [verbose]: Scrolling to GeneralSection..
2025-04-23 12:24:22 [verbose]: Finished scrolling to GeneralSection!
2025-04-23 12:24:24 [verbose]: Scrolling to GraphicsSection..
2025-04-23 12:24:26 [verbose]: Focus contention triggered by DialogOverlay.
2025-04-23 12:24:28 [verbose]: ⚠️ Update ready to install. Click to restart!
2025-04-23 12:24:28 [verbose]: Focus contention triggered by NotificationOverlay.
2025-04-23 12:24:29 [verbose]: Focus contention triggered by NotificationOverlay.
2025-04-23 12:24:30 [verbose]: ButtonSystem's state changed from TopLevel to Exit
2025-04-23 12:24:30 [verbose]: 📺 OsuScreenStack#197(depth:2) exit from MainMenu#613
2025-04-23 12:24:30 [verbose]: 📺 OsuScreenStack#197(depth:2) resume to IntroCircles#566
2025-04-23 12:24:33 [verbose]: 📺 BackgroundScreenStack#628(depth:0) exit from BackgroundScreenDefault#184
2025-04-23 12:24:33 [verbose]: 📺 BackgroundScreenStack#628(depth:0) resume to [empty]
2025-04-23 12:24:33 [verbose]: 📺 OsuScreenStack#197(depth:1) exit from IntroCircles#566
2025-04-23 12:24:33 [verbose]: 📺 OsuScreenStack#197(depth:1) resume to Loader#343
2025-04-23 12:24:33 [verbose]: 📺 OsuScreenStack#197(depth:0) exit from Loader#343
2025-04-23 12:24:33 [verbose]: 📺 OsuScreenStack#197(depth:0) resume to [empty]
2025-04-23 12:24:33 [verbose]: Host execution state changed to Stopping
2025-04-23 12:24:33 [verbose]: Host execution state changed to Stopped

----------------------------------------------------------
database Log (LogLevel: Verbose)
Running osu 2024.906.2.0 on .NET 8.0.8
Environment: Windows (Microsoft Windows NT 10.0.22631.0), 16 cores
----------------------------------------------------------
2025-04-23 12:23:40 [verbose]: Creating full realm database backup at client_1745411020_corrupt.realm
2025-04-23 12:23:42 [verbose]: [?????] Beginning import from circles.osz...
2025-04-23 12:23:42 [verbose]: [3c8b1] [APIBeatmapMetadataSource] Online retrieval failed for nekodex - circles! (peppy)
2025-04-23 12:23:42 [verbose]: [3c8b1] Import successfully completed!

----------------------------------------------------------



osu! version: 2024.906.2.0 Lazer

Sorry for the late response.

PerfectFreeze wrote: 2w434t

by opening an older version of osu lazer on a different drive

If you start an old version of the client that can't read a new database, the old version will back up the database, it will not nuke anything. You can even see that here:

2025-04-23 12:23:40 [verbose]: Creating full realm database backup at client_1745411020_corrupt.realm

The proper recovery steps in your case after you ran the old version were to rename client_1745411020_corrupt.realm to client.realm and re-run the new version of lazer.

spaceman_atlas wrote: 3f11y

The proper recovery steps in your case after you ran the old version were to rename client_1745411020_corrupt.realm to client.realm and re-run the new version of lazer.

Thanks, this worked.