I'm having trouble saving plot images with the *Agg backends. I've tried TkAgg, GTKAgg, WXAgg, and get the following error message (here for WXAgg):
Do not know how to handle extension *.jpg
14:48:54 Debug e:\Projects\wx2.4\src\msw\app.cpp(439): 'UnregisterClass(canvas)' failed with error 0x00000584 (class still has open windows)
WX and GTK backends work. I'm using the precompiled 0.60.2 version of Matplotlib (congratulations on the new release), python 2.3.4, windows XP. I'm calling my program from a DOS prompt to get the error messages, working in non-interactive mode and trying to save the image using the save-button widget.
Darren S. Dale
PGP public key available