DeDRM app will not open on Mac (OSX 10.11.3 / DeDRM 6.3.6a)

[chrubble]

Tried option + double-click, ctrl+click -> 'open', etc.

Error: The application "DeDRM" can't be opened.

(OSX 10.11.3 / DeDRM 6.3.6a)

[apprenticeharper]

Check your security settings.

[chrubble]

Any more details? I am already set to accept installs from unknown sources.

[srvrguy]

It looks like a file permission issue. I'm not sure what exact files need execute set, but you can run the following command at the terminal to fix this:
chmod -R u+x DeDRM.app

Make sure you're in the same directory as the DeDRM application when you run it.

[chrubble]

That worked perfectly - Thank you @motokochan

[Moscarda]

I was having this issue but it wasn't permissions related or security settings, I just had an older release from Mavericks or earlier and after I upgraded it worked fine.