One thing that's odd. The link to wxPython2.6 dmg contains wxPython2.6*panther.pkg.
The "panther" has kept me from going through with this upgrade. Until yesterday, I assumed that I had an adequate version of wxPython2.6, since I've been able to run AG3.0 & AG3.0.1 on my MAC. I didn't bother hunting it down past the System Profiler, which doesn't show wxPython in framework, etc. Yesterday, I looked harder just for fun: ./System/Library/Frameworks/Python.framework/Versions/2.3/Extras/lib/python/wx-2.5.3-mac-unicode/wxPython ./System/Library/Frameworks/Python.framework/Versions/2.3/Extras/lib/python/wxPython ./usr/include/wx-2.5/wx/wxPython Hmmm. This shouldn't work.