Comments - cyicbov

I saw the same thing. It looks like Desura is trying to execute something that isn't a script.

Back up ~/.desura/games/defender-story/defender somewhere.

Then modify it to read:

#!/bin/bash

exec java -Xmx150m -jar defender-full-1.03.jar

The Xmx150m increases the JVM heap size; may not be necessary for you, but I wasn't able to run it without doing this.