I'm trying to fix a bug for one of my users. He sent me a save that he claims Nerd Rage only works when you open the pipboy when you are below the health threshold.

Sure enough, he's right. I was not able to duplicate this on my own save file, but here it seems to be throwing a Papyrus error when it's supposed to activate:

[12/06/2015 - 07:01:00AM] error: Cannot call Remove() on a None object, aborting function call
stack:
[None].PerkNerdRageSlowTimeScript.OnEffectFinish() - "g:\_F4\Art\Raw\Scripts\PerkNerdRageSlowTimeScript.psc" Line 21
[12/06/2015 - 07:01:00AM] error: Cannot call PopTo() on a None object, aborting function call
stack:
[None].PerkNerdRageSlowTimeScript.OnEffectFinish() - "g:\_F4\Art\Raw\Scripts\PerkNerdRageSlowTimeScript.psc" Line 24

Not exactly sure what to do about it given we can't compile or decompile scripts yet, but there must be some reason it's affecting his save and not mine. I just don't know what it is.

Seems I managed to fix it by removing and re-adding the spell tied with it.

player.removespell 4d884
player.addspell 4d884