C2 r50; Windows XP SP3; FireFox 6.0; ATI Radeon HD 4800
^ not r51 yet ^^
When moving code from a level to another and that the code is concerning a local variable, so becomes out of scope, C2 crashes.
* Local var something
Subevent something = true
Moving subevent to Main event level (with or without including Local var something in the selection) makes a crash
A microsoft VC++ runtime error window.