I think Andrej already solved this problem in SVN version of wxMaxima
quite some time ago - he just needs to make another installer package
for Windows and upload it again. The cause for this is lack of
testing on Windows since we (Andrej and I) develop wxMaxima on Mac OS
X primarily, so such windows specific bugs can get through
undetected. Windows based beta testers (interested in compiling
wxMaxima from SVN and reporting bugs to developers) would prevent
such mistakes. With help from Istvan Blahota (provider of Hungarian
translation for wxMaxima, who compiled SVN version for Ubuntu many
times), some bugs, which crash wxMaxima, were noted and fixed. It
would be nice if someone did the same on Windows (if anyone is
interested).. Anyway if you find bugs in wxMaxima SVN you can write
an email to developers and they will be quickly fixed. When there are
only two people developing and testing, many bugs can get through
undetected.
Anyway, a new version will probably soon be uploaded.
Ziga Lenarcic (wxMaxima developer)