I build codeblocks using wxWidgets CVS version monolithic library. It's working fine with it but only with gtk2. Gtk1 segfaults...
As far as the splashscreen crash, I had it once. I can't remember exactly what was the problem, but IIRC it would crash when loading PNG images (all images/icons used in codeblocks are PNG). I can't remember though if I used the system-wide latest libpng or the wxWidgets built-in PNG support...
So, when you configure wxWidgets, if it is configured with built-in PNG support, disable it. If not, enable it.
Doh, I can't remember which one is correct...
I 'll check it out later and post it here.
Yiannis.