Ah, sorry, I didn't think that would be an issue. Yes, permissions is most likely the main culprit. I'll see if I can fix it next time.
[EDIT]
There, fixed the issue simply by getting rid of the simlink and linking the openxcom binary directly.
Ideally I wanted to replace the dylibs with the frameworks which were built for 10.5+ thereby ensuring 10.10 compatibility, but there was some weird dylib version incompatibility between the dylib and frameworks despite being the same library in a different package... The only way to fix it would be compile OpenXcom against the OSX frameworks instead...