Forums Bug Reports mIRC not saving

You've given 'A' answer
But you obviously never read my last post
A: It worked fine on a patched mIRC before christmas
B: Users now with patched mIRC are not having this problem.
C: I have just put my PC back to factory settings, no virii, installed a new mIRC from here, pasting my theme code into it and it's getting deleted.
Don't tell me that i'm not helping myself, i've explained to you that this hasn't happened before so this is unlikely to be the root of the problem.

I've narrowed it down
I can't paste whatever else i like into the file and it seems to save it, if i paste my theme scripting into it, it gets deleted, explain that.