TomeWyrm

Where in the path do I need to place the log4j2.xml file? I've tried a few places that seem logical, and none of them are working.

I was wondering if there is a way to increase the precision of the timestamps recorded in the FML logs. I don't need to improve accuracy, I don't want to introduce overhead, I just want [12:39:32] to show [12:39:32.XXXXXX] or whatever number of digits is appropriately significant. Using another launcher would be fine if one of them can give additional precision, but I'd prefer knowing if Forge/FML can do that natively. If not does anyone know of a launcher that can intercept the logs and output that data to a text file with maximum timestamp precision?

The easiest way to fix this is to first double check ALL of ChickenBones' mods for duplicates and if you don't have any duplicates I would re-download them fresh from his site. In my case I've gotten this error twice, both times I had a duplicate of one of CB's mods (I think the first time it was CodeChickenCore, the second it was NEI). I've also heard you can get it from having the wrong versions of some of his mods, like the 1.7.2 version with the rest being 1.7.10... or even an NEI that's too much newer than your CodeChickenCore.