From what I have read, the Sony HDR-HC9 is a HDV camcorder with a firewire port. Are you trying to do a HDV data capture firewire into the Premiere Elements 7 Capture Windows or are you trying to use some other type of non firewire connection for the capture. USB does not work for Premiere Elements (any version) in this regard.
If it is as I have stated, have you tried to do the HDV data capture firewire into the free HDVSplit program to get split m2t clips that you import into Premiere Elements 7 with Premiere Element 7's Get Media/Files and Folders.
On the other hand, you say that you other miniDVD HDV camcorder works (Sony HDR-FXIE). That seems to be a PAL area only camcorder?
When you set up for these captures, what are you setting for the project preset....for each, PAL HDV HDV 1080i25 or other?
Definitely look into HDVSplit if it is still available.
We will be watching for further developments.
Did you note that, whereas the Sony HDR-HC9 is not working (with firewire connection) on this computer, the Sony HDR-FXIE (with firewire connection) is. That is how I read the probable issue. But, after the posting of his/her thread, the originator of the thread has not returned to confirm details.
I would assume that both camcorder firewire connections are targeting the same IEEE 1394 Bus Host Controllers in Device Manager as per Steve Grisetti's Legacy Driver scheme. Under those conditions, is there any precedence for this Legacy driver update being involved in the issue presented?