hi, I had this extension module for python working fine with older versions of Boost and Python 2.1 but now we've updated to gcc 3 and Python 2.2 and it crashes weirdly, so I decided to try the latest version of Boost. I built the boost python library using /libs/python/build/gcc.mak. Everything seems okay, but when I try to load my library in Python I get: ImportError: ./HDF.so: undefined symbol: do_call__CQ45boost6python6detail4initP7_objectT1 when I check the symbols in my library I have this: U do_call__CQ45boost6python6detail4initP7_objectT1 and a whole lot of things like this: 00199d70 W do_call__CQ45boost6python6detailt24wrapped_function_pointer2ZQ23hdf11HDFVariableZPMQ23hdf7HDFFileFPQ23hdf7HDFFileRCQ35boost6python6stringcRCQ35boost6python5tuple_Q23hdf11HDFVariableP7_objectT1