No SOMA file in Documents/My Games

[Abion47]

Visual Studio C++ 2010 Runtime is one of SOMA's dependencies. The first time you launch the game after you install it from Steam, it would've been one of the things that Steam automatically installs.

Go into your "Add and Remove Programs" and uninstall any versions of "Visual C++ 2010 Redistributable Package" (from memory, not sure if that's the exact name) before trying to reinstall it.