Qt5.1.1 cannot find dlls (Win7)

[la-ga]

Hello,

I have written a program with Qt. When I try to build it on my PC I get the following errors:
cannot find -lqtmain
cannot find -lQt5Quick
cannot find -lQt5Qml
cannot find -lQt5Network
cannot find -lQt5Gui
cannot find -lQt5Core
error: Id returned 1 exit status

When I copy the project to another PC I don't get any errors.I geht the errors only on that PC.
So I thought it is a problem with the installation and uninstalled the Qt and instlalled the latest version from this site. But the errors are still there.
I think it is a problem with the dlls in the installation directory.

Can anybody help me with this problem?

Thank you for all answers!

[la-ga]

Does anybody has an idea?

[koahnig]

You need to give some more information on how you compile.
Are you using Qt creator?
Which compiler?

[la-ga]

Hello koahnig,

thank you for your answer!

Yes, I'm using the latest version of the Qt creator.
I'm using the MinGW 4.8 32bit Compiler.
My Qt-Version is Qt 5.1.1 MinGW 32bit.

[telcy]

Sorry for push but I'm interested how you fixed this problem.

I have the same problem: http://qt-project.org/forums/viewthread/38834/

I had 2 guys who tried to fix it. But without success.