MSVCR100.dll isn't part of Clam but it is a dependency that it needs to work properly. It is part of the Microsoft Visual C++ 2010 Redistributable Package. Exception Code: 0xc0000135 means that the .dll was not found, which since it is showing a version it means that another install replaced it with a different/older version (you should have version 10.00.402191.1 in your \Windows\System32, assuming you are running 32-bit version of Windows Server). I would download this package from Microsoft and do an install, it should fix the problem for you.