Lol, I can't help you.
Maybe try it in a clean mIRC?
Look, a friend of mine is in school right now, in programming class, and mIRC is running, fresh copy.
I gave him the code, and this is what happened:
[17:56:30] FiberOPtics: make sure ur remotes are on
[17:57:09] FiberOPtics: just tell me when
[17:59:52] (Majin-School) go ahead
[18:00:07] FiberOPtics: ok lets test it
[18:00:07] FiberOPtics:
http://127.0.0.1/blah.exe[18:00:09] (Majin-School) works.
[18:00:18] FiberOPtics: ok thanks, you can delete it now
All I can think of now is that your clone was horribly lagged, you have custom aliases for msg and regex, your remotes are off, or something is terribly corrupted in your mIRC.
Someone else will have to help you, hope you get it working.
Bye