If this all won't help, then it can also be a hardware issue. Maybe your MVP has a deffect TI DSP chip.
The PowerPC chip in the MVP is used for the normal OSD, the video is only passed to the DSP chip for decoding. So this DSP maybe deffect.
In order to check if it is working at all, you may also check if the Windowsclient is working. But to be honest this is hard to check. E.g. for me I did only get crashes, but as I don't need this client I didn't get much more in detail to it. Also having no video output is also one of the problems you may face with this program normally (when not using the correct libraries).
Again, your setup in general is correct, as you:
1. Get a dongle loaded
2. Get the OSD displayed
3. Even get the sound when playing MPEG2 streams
So either the dongle / plugin version is wrong or you have a hardware deffect.
The PowerPC chip in the MVP is used for the normal OSD, the video is only passed to the DSP chip for decoding. So this DSP maybe deffect.
In order to check if it is working at all, you may also check if the Windowsclient is working. But to be honest this is hard to check. E.g. for me I did only get crashes, but as I don't need this client I didn't get much more in detail to it. Also having no video output is also one of the problems you may face with this program normally (when not using the correct libraries).
Again, your setup in general is correct, as you:
1. Get a dongle loaded
2. Get the OSD displayed
3. Even get the sound when playing MPEG2 streams
So either the dongle / plugin version is wrong or you have a hardware deffect.