I have 2013a installed and the patch from here. The patch should work, but when I navigate to the application, there is a "stop" icon above the app icon which still prevents the patched version from launching. How can I remove this disabled status? For now I can only launch matlab from inside the app content.
It seems to be related to this bug report.
Does the application run if you open it via terminal? e.g
if so you may just need to clear dock/icon caches:
killall -HUP Dock