The drive with the game isn’t connected
What happened
The game is on an external drive that isn’t connected right now.
The fix
Connect the drive, then click Try Again.
When to write to us
If the drive is connected and Malbec still says this, write to us with a diagnostics file.
Email support@malbec.app. For a diagnostics file, choose Help › Export Diagnostics… in Malbec and attach the zip it saves. It has no account details, and your home folder is masked.