This is a place holder for zipios.lib and the zipios++ header directory zipios.lib will need to be generated and copied to this location for the Win32 plug-in build of libOpenWriter.dll to work. zipios++ can be found at http://zipios.sourceforge.net/ zipios++ is in a beta state for Windows and requires special handling. Hopefully in the near future it will build more successfully as it is required for this plugin. Get the source code, follow the instructions for building. Certain zlib Include files will needed to be created or mapped to. This means that either copy zlib.h to VC98/include/zlib.h zconf.h to VC98/include/zconf.h Or define where to find those files as part of vcvars32.bat INCLUDE search routines. Place in this directory (win) zipios.lib and the entire zipios++ header directory And now you are set to build this plug-in. Go back to the OpenWriter directory and type make Note - unable to get make ABI_OPT_DEBUG=1 to build successfully