Hi James,
I suspect that this concerns all versions of the Staden package: they do not start anymore on OSX Yosemite. Here's a typical error message:
tg_index test_out.caf
dyld: Library not loaded: /usr/X11/lib/libxcb.1.dylib
Referenced from: /opt/biosw/staden-2.0.10/lib/libX11.6.dylib
Reason: image not found
Trace/BPT trap: 5
This is due to Apple having thrown out X11 from their core libraries and the user now being forced to install Quartz/X11. Subsequently, /usr/X11 has disappeared and is now located in /opt/X11.
Soft-linking /opt/X11 to /usr/X11 fixes the problem.
In case you cannot easily fix the problem in the build, I recommend adding a README which describes the problem and the temporary fix.
Best,
Bastien