I was installing the 64-bit trial version (Trelis-15.0.3-Win64.exe) on my PC (ThinkPad W510 - Windows 7 64). The completing-the-Trelis-15.0-setup-window popped up. Trying to start Trelis for the first time results in an immediate crash: “trelis.exe has stopped working A Problem caused the program…”. Restarting my PC does not help. After reinstalling the software the error remains. Any idea why this is happening? any help is very much appreciated.