Qt 4.8.1 Cannot release debugged app for windows.

[notes90]

Hello everyone !

I have working solution of client-side of my project ( calculator through winsocks ). Problem is that I cannot release my solution. Debugging works fine - no errors program runs ect.
When Im releasing my app after adding all qt dll's to release folder and clicking on .exe I Get error :

The procedure entry point ??4Qstring@@......@Z could not be located in the dynamic link library QtCore4.dll

Please help me with this one. I'ts my second day I am trying to release this application. I've tried to add different qt dll's 4.7.2 and lower... nor of them works... :/
I even reinstaled whole SDK, had 4.7. and thought maybe update went wrong ... I've made whole new project in 4.8 and copied source and it works fine in Qt Creator...

I'm working on windows vista home premmium 32bit


Thanks in advance,
Yours,
notes.