TripOptic

Deleted the world and had no further issues. Apologies in advance if this is in anyway incomplete. So I don't entirely know how I would go about explaining my issue. The issue is when removing a mod which adds any block( e.g A modded ore), then going through /fml confirm process the server tries to make a back up of the world. That is where the issue starts; Forge fails to make a world backup (that is also sometimes a fully corrupted .zip file) then forces an immediate stop of the sever(essentially crashing). Well here is everything I have to help. Fml-server-latest https://gist.github.com/TripOptic/e4044a885f6aa1f8e691266b7193c5a5 Fml-client-latest https://gist.github.com/TripOptic/4388a6156402cce59d7f95c978873fc7 Picture of server console Side note: AromaBackup has the same issue creating auto saves(doesn't crash just fails).

Thank you Lex

Forge doesn't load far enough to generate any forge logs or files, so I cant link any logs. All I have to go off of is the launcher log. Edit: This is a clean install.Wiped .minecraft folder and ran launcher to generate all needed files. Edit 2: I have tried with forge-1.7.10-10.13.3.1355-1.7.10.jar as well as forge-1.7.10-10.13.3.1372-1.7.10.jar