So I have been trying to find the names of some particles by opening the .pcf file in the particle editor. However as soon as I click 'open', the whole thing crashes. At first I thought it might have been because I had Hammer still open so I closed it, which didn't change the outcome. I tried restarting Steam which did nothing. I also made sure I had no other options in my launch options (I usually have -novid -noborder in there) so the only option was -tools Nothing worked. Anyone got any suggestions what's going wrong here?