Hi Admin,
I've encounter the same error the last working version I've got is win32_4.1.39.
I installed win32_4.1.43 latest one and copy all Qt's dll files from 4.1.39 and overwrite them and now it seem that my 4.1.43 version is working normally…not fully tested though.
Hope this add my 5 cent knowledge.
Cheers,
fixrouter