I'm having issues when playing with Not Enough Items and Flan's Mod v4.10.0 (this issue is only between them, without any content pack). When one NEI page contains Flan's mod item: tile.flansWorkbench.#.name from 3 to 15, it keep spamming on my console the following line:

[Client thread/INFO]: [net.minecraft.crash.CrashReport:func_85057_a:320]: Negative index in crash report handler (0/27)

And when I put these items in my hotbar, the game crashes.
Crash Report Link: https://paste.ee/p/LMFBM
I've looked in the log, before it began spamming that line, and it says:
Error Link: https://paste.ee/p/0jGLn
Those error messages repeat themselves until 1xtile.flansWorkbench@13. And I've tested with all Flan's Mod versions available in his website, for MC 1.7.10, and the only one that doesn't crash or give errors is the 4.4.0.

I've found a workaround to this issue, you can create a Mine Tweaker script to hide these items.