BlitzMax was not running because you didn't have libstdc++5 installed. Ubuntu comes with libstdc++6 by default.
If you ever find that something does not run on Linux, the best way to wonder out why is to run it from a terminal, so you can read output messages there.
If you ever find that something does not run on Linux, the best way to wonder out why is to run it from a terminal, so you can read output messages there.