FYI - I was trying to burn a backup copy of one of my old PS2 games. I haven't had a problem with the DVD5 games, but this is the first DVD9 game I tried. Here's the log from that session:
I 16:29:01 ImgBurn Version 2.4.2.0 started!
I 16:29:01 Microsoft Windows Vista Ultimate x64 Edition (6.0, Build 6001 : Service Pack 1)
I 16:29:01 Total Physical Memory: 4,192,720 KB - Available: 1,292,168 KB
I 16:29:01 Initialising SPTI...
I 16:29:01 Searching for SCSI / ATAPI devices...
I 16:29:20 Found 1 DVD-ROM, 1 DVD