wesblueeyes: I am also unable to launch after this last hotfix but my issue says vcomp140.dll must not be a windows program and game crashes after it tries to connect to support server. I have uninstalled the game, reinstalled three times. I have tried reverting back to earlier versions, but continue to get the same error. Frustrating...anyone else see this?
Warenwolf is probably correct as there is, in all likelihood, some Microsoft Framework missing/corrupted on your system.
The frameworks required for the game, according to the folks at Larian Studios, can be found:
HERE Download and run the installers and restart the machine afterwards before attempting to run the game for good measure.
Be sure and let us know if this solves your problem for the benefit of others in the future!