Forge 1.10.2-2092
Random Things 3.7.6
Extra Utils 1.1.0a
Crash on load w/ the newest Extra Utils version
Crash Log

Yeah, that's what happened to me, after I downgraded extra Utils back to 1.0.1, random things worked fine.

I just tried just these two mods by themselves and it worked fine, it looks like the could be a third mod involved.

How do you know it's Extra Utilities & Random Things? Can you reproduce this with only those 2 mod installed?

I was actually just about to open a report for this. Random Things works fine with earlier versions of ExtraUtilities, but things go splat when I try and update extra utilities

Looks like this is ExU and Optifine, more than exu and randomthings

I think it might be load order dependent so whether it crashes with a certain set of mods is kinda random. It would be interesting if you could reproduce it only with or without optifine installed.

Ok so it does actually appear to happen with Optifine & Extra Utilities installed.

Found the problem, it only happens with mods which use delayed sprite registration.
Updated preview OptiFine C4 with a bugfix.

Neat :), just tried it and it seems to work fine now. Closing this.

How did you come upon the solution, @sp614x ?

One Forge hook was missing from TextureMap.
It can be used by mods to organize delayed atlas sprite registration, which is rarely used.