[Inkscape-devel] Effects on Win32

Has anyone tried to use effects on Win32. I tried it at work today and failed. When I try to run a script I get:

** (inkscape.exe:2648): CRITICAL **: file extension/implementation/script.cpp: line 586 (virtual void Inkscape::Extension::Implementation::Script::effect(Inkscape::Extension::Effect*, SPView*)): assertion 'mydoc != NULL' failed

I'm having great difficulty diagnosing whether it fails before or after running the script. Is it supposed to work?

Aaron Spike