I had the same problem with Boa after updating to wxPython 2.4.0.6, but I couldn't believe that windows2.py was the culprit. (Everything worked just fine with wxPython 2.4.0.2 that I had originally...with the exception that the wxGrid selection functions were broken)
I tracked the wxNotebook_AddPage problem down to a Boa file named ErrorStackFrm.py and found the problem in lines 27, 28, and 29. The labels for the variables are no longer accepted by wxPython. Change the labels to page, text, and select (the imageID label is just fine as is). Then save and rerun Boa. Boa now gets past the problem and fully appears.
However, there is one last problem...I get a Deprecation error warning dialog and it says the trouble is at "Boa.pyc 378 use Python's True instead" I have no idea what this means. Can anyone help me?
Thanks,
John Veneruso
Portland, OR