Pinnacle PCTV 5.4.0.3032 Incompatible With Windows 7

I have Pinnacle PCTV tuner installed on one computer running Windows 7 RC x64:

PCTV PRO PCI 110i

The drivers are ones that came with PinnacleTVCenterProSetup_5.4.0.3032 Vista 64Bbit

The drivers installed without an issue. However, the PCTV software seems to not work on Windows 7 RC.

First of all, the lag between the opening of the application and the time TV picture comes on seems significantly larger on Windows 7 RC than on Vista Home Premium x64.

The application nevertheless opens and the picture eventually comes on. However, this is an error message I get when I click on the Record button.

http://img200.imageshack.us/img200/1460/recordu.png

When I click on OK on the above capture, I get the following screen.

http://img193.imageshack.us/my.php?image=record2.png

When I click on OK on this above screen, the application icon disappears the task bar and comes back a few seconds later, however, PMCLoader.exe does not quit, so, when I click on the icon on the task bar again to open, a new window opens but the background is grey .

After that, I cannot get the application to open anymore until I restart the computer or go in to Task Manager and manually stop PMCLoader.exe

I get a similar if not identical message when I put Win 7 RC to sleep with a scheduled recording and come back to open the application after the recording begins. PCTV's scheduled recordings wake up the machine. However, this is the error message a few seconds after I open the application to watch the show that is being recorded.

http://img29.imageshack.us/img29/7076/record3.png

Lastly, whatever I do on the application, for instance, pulling up the EPG and Settings windows, seems to take a lot longer on Windows 7 RC than Vista Home Premium.