"Input string was not in a correct format.​" error while compiling script

[XJDHDR 0]

I just tried to compile the PlayerWerewolfChangeScript with a few changes I made but I am getting this error that causes the compiler to fail:

• PlayerWerewolfChangeScript.psc(0,0): error while attempting to optimize script playerwerewolfchangescript: Input string was not in a correct format.

I have never seen this error before and I have no idea what I need to fix in the script. The only way I've found so far to make this error go away is to remove the "-optimize" switch from the compiler options but I would rather not do that if possible. Can anyone please help me with this? Thank you!