[quote author="sierdzio" date="1328029289"]After that? How exactly after? Are we talking about Qt Creator? It usually works flawlessly for me. Maybe UI header was not compiled? Try to build the project first, and see if it starts working.[/quote]
Thanks, but i was just found the solution. I updated qt creator and installed qt assistant. I dont know which one helps but it is working flawlessly for me, too.