I spent the last few days working with a few people to get Python.NET working under Mono 1.9 on Mac OS X. I just checked in all the changes: -Added workaround to clrmod.c for Mono error: "Symbol not found: _environ" (a fix has been added to Mono SVN, according to Geoff Norton at Novell.) -Changed ordering of mono_config_parse(NULL) call in pynetinit.c, to handle latest changes to Mono embedding interface (a fix has been added to Mono SVN, according to Geoff Norton.) -Fixed TypeManager static constructor to properly handle .NET exceptions (thanks to Geoff Norton.) -Added to pynetinit.c to make clr.so search the site-packages folder of the currently running python to find the Python.Runtime.dll, instead of just the cwd (thanks to Peter Shinners and Wei Qiao at Blizzard Entertainment.) -Updated one of the Python.Runtime.dll.config files to map to .dylib instead of .so (thanks to Wei Qiao.) This should be looked at further, as there are a few of these files floating around... -Changed the Makefile to be self-contained and create the clr.so (thanks to Wei Qiao.) This should be looked at further, as running setup.py currently builds the clr.so, but gives an error afterwards. -Updated README.txt a bit more. Joe