The wx-stl and wx-non-stl provide different apis. We use the non-stl apis in quite a lot places.
Once I've tried to track and fix most of the places which use these apis.
And I think I've made all non-contrib code to compile, but I might be remembering wrongly.
This is not an often tested combination. If you're not interested in fixing those problems I suggest using wx-non-stl.
edit: It seems that I've not pushed the fixes in trunk...