When I add quark oddities and your mod my game crashes.
https://pastebin.com/ZgzTKxmK

Is your mod a virus? My game still crashes while I deleted it.
https://pastebin.com/bzgzkDDt

I'm not sure what is causing the first crash, I will look into it. The second crash is caused because you've deleted the mod but not the core mod, which is in the 1.12.2 subdirectory of your mods directory. The core mod is expecting my mod to be present.

The first crash is being caused by two copies of my coremod being present. You need to delete BackpackBaubles-0.1.0-core.jar in the 1.12.2 subdirectory. I didn't account for Forge handling coremod extraction like this. I will work on avoiding this situation in the future.

This will be fixed in 0.2.0, but you will need to make sure to delete any and all Backpack Baubles jar files in the mods/1.12.2 directory before launching the game. I apologize for causing this trouble.

Perfect thanks if I delete the cores it works, I will try by just deleting 1