Qt 4.3 incompatible with .NET framework 2.0 servicepack?

[jobrandt]

I have installed winxp 64 with .NET framework 2.0,3.0,1.1 and VS 2005+sp1+hotfix(qhash) and Qt 4.3.3 .
Everthing is running well. But if a install the serviepack fro .NET framework am not able to start VS 2005.
The splashscreen is shown for a few seconds and than nothing is happen.
Maybe this is not a problem Qt.
But now i have setup a new computer. I have installed winxp 64 with all servicepacks and updates(including .NET framework 2.0,3.0+servicepacks).
VS2005 (+sp1, without hotfix) is running well. But i am not able to install the qt vs integration. Some dlls are not able to be registered.
I am also not able to compile Qt 4.3.3. I have started the compilation several times and it stops at different points.

Could it be that Qt 4.3.3 is incompatible with .Net framework 2.0 servicepack?

[marcel]

No, it is more likely because of the platform(64bit).
Qt hasn't much to do with .NET.

What errors do you get?

[jobrandt]

I do not think it's a problem with 64bit. I am working with winxp 64 for more than one year without any problems(qt compilation+qt vs integration).
The problems start with .Net framework 2.0 servicepack.

I got the errors:
Can not register QtProjectEngine.dll
Can not register formeditor.dll
Can not register qt4v.help
Cannot register qt help

[jobrandt]

On the new computer i have solved the problem.
It was a problem with Kaspersky Internet Security 7.0. If i had deactiviated it i was able to install the vs integration.
The problem with my old computer still exists.