Code that was compiled and tested on windows is now getting ported to unix (by another organization). I'm a bit puzzled by the following error message they are getting: /op_models/FCS_SOSv1.0_Scenarios_v10.5/FCS_SDD/CabWnwSrwPoP.opt32.s1.nt.so: symbol __1cFboostGdetailUsp_counted_base_impl4CpnXtransaction_reservation4nHslot_id_nYchannel_reservation_type___n0APchecked_deleter4n0E____G__vtbl_: referenced symbol not found I believe that it is looking for the implementation of boost::shared_ptr Any hints as to what could be wrong? I did not include source code because I suspect the problem is more basic than that. When I asked which compiler was used, he replied "All I know is that we are using SunPro 5.4 for the compiler." -- Jason. 732-578-6378