Cannot start through Steam, can start standalone but crashes
Edit: I used to be able to start Trials 2 fine through Steam - I was having some heat issues with my PC, though (now fixed) and one time my computer just shut itself off - since then nothing's quite been the same. I have updated video and sound drivers since that point, and any other games I've tried all work fine. In addition, I've tried deleting the local game cache and re-downloading several times, to no avail.
I can't start Trials 2 at all through Steam (it crashes Steam just after you click "Ok" at the Launcher stage) and while I can start it if I just navigate to the directory in steamapps, it crashes after a few minutes of play.
I'm running the latest version of everything I can get my hands on (Vista sp1, Catalyst 8.5, newest Audigy drivers, etc).
Steam crashlog:
Problem signature:
Problem Event Name: APPCRASH
Application Name: Steam.exe
Application Version: 1.0.0.0
Application Timestamp: 47cdc51a
Fault Module Name: steamclient.dll
Fault Module Version: 3.0.0.1
Fault Module Timestamp: 4845958e
Exception Code: c0000005
Exception Offset: 0007aad0
OS Version: 6.0.6001.2.1.0.256.6
Locale ID: 1033
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160