I can upload new build with the fixed runtimes if nessesary, but it might be faster for some to just do a git pull from master and then rebuild the headers and crt from there if they have Msys2 or Msys.
Also i might have fixed the image assertions in the WxWidgets-3.0.3 codeblocks builds for good, i can now open and build with it without any errors so far.
Might not be the correct place but what i did was this.
in src/main.cpp in the MainFrame::MainFrame(wxWindow* parent) function put
// avoid image assertions, initialize all image backends.
wxInitAllImageHandlers();
just after
// New: Allow drag and drop of files into the editor
SetDropTarget(new cbFileDropTarget(this));
after this the only oddity is that the codeblocks IDE flickers in the tray for a few moments before showing, no errors though.