For some reason, in mIRC 6.15, when I type
//say $chr(160)
mIRC crashes. Why? I don't know. This didn't happen in 6.14. The only reason I even found this out is because an alias I had just suddenly started making mIRC crash (well, freeze) when I used it.
If it's of any relevance:
OS: Windows 2000 Professional, Service Pack 4 (5.0 - 2195)
mV: 6.15