Since I updated the game I've been getting the following message when trying to open the game:

- The application "Mother Russia Bleeds" can't be opened

Or if I try open it from Galaxy Client nothing happens, the play buttons turns grey and then green.

Any thoughts?

I have the most recent version of MRB (GOG), but am not using the Galaxy client.
Also, I'm running the Linux version on Mint 17.3 64 bit.
No problems.