Board Thread:Bug Reports/@comment-26172435-20160828065557/@comment-27219153-20160828174425

AlteOgre wrote: I get consistent crashes (tried multiple times) with SP world generation using NEI. With NEI disabled there's no problem. Here's two crash reports. One for initial creation, one for trying to enter the same world that was seemingly generated.

First generation attempt, crash upon generation: http://pastebin.com/xK4eNDF1

Attempt to enter same world: http://pastebin.com/rPwWencv

(This was posted on Facebook as well) After downloading (and adding to my mods folder) NEI, codechickencore, and NEI addon for LOTR, I was unable to reproduce your problem.

I translated this from the crash report: Kan de aangevraagde bewerking niet uitvoeren op een bestand met een open door de gebruiker toegewezen sectie

And it gave me this: Can not perform the requested operation on a file with an open user mapped section

If you have a better translation please post it. Your problem appears to be with the file indentified by this path: C:\Users\AlteOgre\AppData\Roaming\.minecraft\saves\LOTR 29_3\NEI\server.cfg         I would just delete the server.cfg file and let NEI generate a new file.