L.S., When I compile an application against an experimental version of wxHaskell*, the application always ends with the message: Segmentation fault/access violation in generated code , unless I set the environment variable CPLUS_INCLUDE_PATH to C:\Program Files\Haskell Platform\2013.2.0.0\mingw\lib\gcc\mingw32\4.5.2\include\c++\ , which is the same value as used when compiling wxHaskell. If I copy the contents of C:\Programs\Haskell Platform\2013.2.0.0\ to some other location and let CPLUS_INCLUDE_PATH point to the new location of directory c++, the segmentation fault message reappears. Why is this and how can create an application that also works on another computer? Regards, Henk-Jan van Tuyl * wxHaskell is a binding to the wxWidgets GUI library, which is written in C++ -- Folding@home What if you could share your unused computer power to help find a cure? In just 5 minutes you can join the world's biggest networked computer and get us closer sooner. Watch the video. http://folding.stanford.edu/ http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html Haskell programming --