I am still stuck with this problem
Not getting bus error though, but the app unexpectedly quits.

My code is here: http://rafb.net/p/AvStNW98.html
Quitting when reaching line 22 where I call a function in the plugin.

The full console output from running the app is:
Starting /Users/niklas/code/test/PluginLoadingTest/PluginLoadingTest...
plugin loaded!

The program has unexpectedly finished.