Deploying Phonon application

Hello,

I struggle for several days to deploy my application using Phonon.
I placed all the Qt DLLs near my exe, and the backend ‘phonon_ds94.dll’ in a folder phonon_backend.
Everything works perfectly on Windows 7 (in release).

When I tried it on Windows Vista, nothing has worked. A friend of mine who also tried on Vista and it only gets the sound (the application has video + audio).

I’m wondering if we should not redistribute other DLLs or redistributable Windows ?
Is it necessary to install specific components to OpenGL or DirectX?

I saw that the documentation (http://developer.qt.nokia.com/faq/an...ed_application) indicates that we should copy the dll phonon_ds9d4.dll in phonon_backend. Is this correct (d stands for debug right?)?
Both phonon_ds9d4.dll and phonon_ds94.dll must be copied ?

I built my Qt libs under Windows 7 (development PC), does the produced DLL is compatible with XP and Vista ?
Should phonon dlls be built under Vista if I want my application to run on Vista ?

Why the application runs on 7 but not Vista?
Thank you for your help!

Did you ever figure this one out?

I have the same problem. 4.6.4 worked like a charm, so I think I have to revert my application to 4.6 branch. DOH!