It's been two days since I downloaded this mod. Everything was fine. I was still playing this morning. But now I won't turn on the game. After loading, the game crashes. It says it's because the file contains a virus or potentially unwanted software. After that the mod is automatically deleted. I tried to download new file from CurseForge but Windows Defender blocked it due to a virus.

I'm kinda confused. I tried to scan it with Eset and Malwarebytes and they say it's OK. After that Windows Defender says it's OK too... So now I can play normally... So I don't have problem... But maybe it can be somehow useful to you.

Mod version 1.19-11.0.6-fabric
Loader version: 0.14.8

Detected: Trojan:Script/Ulthar.A!ml

Incompatible mod set! net.fabricmc.loader.impl.FormattedException: net.fabricmc.loader.impl.discovery.ModResolutionException: Mod discovery failed! at net.fabricmc.loader.impl.FabricLoaderImpl.load(FabricLoaderImpl.java:192) at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:148) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) Caused by: net.fabricmc.loader.impl.discovery.ModResolutionException: Mod discovery failed! at net.fabricmc.loader.impl.discovery.ModDiscoverer.lambda$discoverMods$1(ModDiscoverer.java:146) at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33) at net.fabricmc.loader.impl.discovery.ModDiscoverer.discoverMods(ModDiscoverer.java:146) at net.fabricmc.loader.impl.FabricLoaderImpl.setup(FabricLoaderImpl.java:210) at net.fabricmc.loader.impl.FabricLoaderImpl.load(FabricLoaderImpl.java:187) ... 3 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: Error analyzing [C:\Users\tende\AppData\Roaming\.minecraft\mods\betteranimalsplus-1.19-11.0.6-fabric.jar]: java.io.FileNotFoundException: C:\Users\tende\AppData\Roaming\.minecraft\mods\betteranimalsplus-1.19-11.0.6-fabric.jar (The operation was not completed successfully because the file contains a virus or potentially unwanted software) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480) at java.base/java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:562) at java.base/java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:604) at java.base/java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:981) at net.fabricmc.loader.impl.discovery.ModDiscoverer.discoverMods(ModDiscoverer.java:143) ... 5 more Caused by: java.lang.RuntimeException: Error analyzing [C:\Users\tende\AppData\Roaming\.minecraft\mods\betteranimalsplus-1.19-11.0.6-fabric.jar]: java.io.FileNotFoundException: C:\Users\tende\AppData\Roaming\.minecraft\mods\betteranimalsplus-1.19-11.0.6-fabric.jar (The operation was not completed successfully because the file contains a virus or potentially unwanted software) at net.fabricmc.loader.impl.discovery.ModDiscoverer$ModScanTask.compute(ModDiscoverer.java:255) at net.fabricmc.loader.impl.discovery.ModDiscoverer$ModScanTask.compute(ModDiscoverer.java:212) at java.base/java.util.concurrent.RecursiveTask.exec(RecursiveTask.java:100) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) Caused by: java.io.FileNotFoundException: C:\Users\tende\AppData\Roaming\.minecraft\mods\betteranimalsplus-1.19-11.0.6-fabric.jar (The operation was not completed successfully because the file contains a virus or potentially unwanted software) at java.base/java.io.RandomAccessFile.open0(Native Method) at java.base/java.io.RandomAccessFile.open(RandomAccessFile.java:344) at java.base/java.io.RandomAccessFile.<init>(RandomAccessFile.java:259) at java.base/java.io.RandomAccessFile.<init>(RandomAccessFile.java:213) at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1312) at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1277) at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:709) at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:243) at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:172) at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:186) at net.fabricmc.loader.impl.discovery.ModDiscoverer$ModScanTask.computeJarFile(ModDiscoverer.java:280) at net.fabricmc.loader.impl.discovery.ModDiscoverer$ModScanTask.compute(ModDiscoverer.java:250) ... 7 more

Please inform, where are you downloading the mod from?

No one else has had this problem, so I'm assuming your antivirus just went haywire or you somehow got it from a bad source.

I downloaded it here https://www.curseforge.com/minecraft/mc-mods/betteranimalsplus/files
Detailed information from Win Defender
webfile: C:\Users\tende\Downloads\betteranimalsplus-1.19-11.0.6-fabric.jar|https://mediafiles.forgecdn.net/files/3825/878/betteranimalsplus-1.19-11.0.6-fabric.jar|pid:14396,ProcessStart:133009191280487235

As I said, I scanned it with Eset and Malwarebytes and it was ok. After 3 blocked files even Win Defender says it's ok. So yeah, Win Defender probably failed? Dunno... I wanted to share it if it could be useful in any way.