User blog comment:SamwiseFilmore/Trouble with Ubuntu/MC/@comment-25841881-20150424003211

I don't know if this will help in your case, but it is almost always the problem when I can't even run things. Right click on the file, and open the 'Properties.' Swap to the permissions tab. Down, at the bottom, enable execution of the file as a program. recneps (Temp Mod)  (Fill My Mailbox) 22:44, April 23, 2015 (UTC)