On Aug 14, 2007, at 3:43 AM, Wei Ping Song wrote: > Thanks Philip, but my Python version is 2.5 seen as below: > wps2 at cjspc9:/opt/tinyos-2.x/apps/Blink> python --version > Python 2.5 What version of the Python devel RPM/packages do you have? It might be that you need to re-swig the interfaces. Phil