Mac Language and _()

I've isolated the pgAdmin3 crash on Mac:

listViews->AddPage(properties, _("Properties"));        //
NBP_PROPERTIES

This fails, but this:

listViews->AddPage(properties, wxT("Properties"));        //
NBP_PROPERTIES

succeeds, so clearly there is something amiss with the
unicode/translation stuff.  It probably has something to do with the
fact that pgAdmin3 thinks I'm Chinese.  I'm not sure what to do
next...any ideas?

ahp