I hope you get it fixed soon. It definitely appears that the Steam verification process is damaging TS installs in certain cases. I'm curious as to who is responsible for developing and supporting the distribution and verification software, Steam or RSC. I was always under the impression that Steam was more or less in a roll of just being a network of servers to distribute exactly what the game vendor gave them, but now I'm not so sure. Lately some of the reports sound like Steam verifications are corrupting TS installs.
