Recently installed 3.15.1 fresh from the ETC website on a on a laptop. (I5, 8 gigs ram,) when I opened the software the laptop immediately crashed and went into a boot cycle continually crashing until I wiped the machine and reinstalled windows. Thinking it was a hardware issue I picked up a NUC (windows 10, 16 gigs ram, i7) downloaded the program installed it and when I went to open it it crashed the brand new machine. Restored windows to a backup and went back to 3.14 and things are working fine.