This is a problem that has started happening only recently. It seems to be if I use Hammer for a certain amount of time. Close it. Then later open Hammer up again, using ctrl to choose multiple objects crashes the program. I can fix this problem by restarting Steam, but it's an odd issue and I wasn't sure if anyone else was having a similar problem lately.

Also I am using "-dxlevel 80" as a start command on hammer to resolve some of the issues caused by the Source update.

yeah that source update is a <3<3<3<3<3. All my models and brushes are freaking out on me.

Yeah for me to,
models and brushes are still phucked.
Anyone got a solution, besides waiting?

Don't let hammer update until you know it's safe :D

I haven't had internet for ages so my hammer is safe