DonS,
This problem does not seem to be a "Vista" problem, but a win500_com connection issue. I'm having the exact problem described here and I'm running Windows XP sp3, win500 1.98, FTDI drivers 2.08.02. I can't find any solution for this if you are using win500_com. Every function I've tried except this one works fine using win500_com. Is there a fix for this problem (other than not using win500_com or uploading from win500_com to the scanner's working memory then manually moving each working memory to v-scanners one at a time)?
BTW whenever I run the monitor function using win500_com, it changes my CCDump function to "YES" and leaves it that way after stop/exit. Don't think this is causing the v-scanner problem because I go to the scanner and manually change the CCDump back to "NO" and I still get the "ERROR 02 Received (Expected ACK) -folder-1" described above. DSPDump is always "NO".