Paul,
Just a heads up that on the newest version of Mac OSX (El Capitan, 10.11) you can't count on DYLD_LIBRARY_PATH (the equivalent to LD_LIBRARY_PATH for OSX).
They have essentially removed it for security reasons.
Instead, you must use rpaths to embed the path to dynamic libraries into your application binary at compile time.
Basically: the time for LD_LIBRARY_PATH and DYLD_LIBRARY_PATH are at an end.
I haven't noticed any problems yet with OpenMC due to this, but your email here reminded me about it (we just struggled through this on my own project). So, just thought I would give you guys a heads up.
Derek
Thanks Paul. I was not able to try it today. Will try it first thing tomorrow and let you know. Thanks for your help.