While waiting for a just-purchased UltraPAK on a USB drive to arrive, I decided to download the app and RealDrums installers to get the patches up to date, and to explore a bit. The downloads and installations appear to have gone properly, but when I attempt to launch the app, I get a dialog with debug error 1386, and the message "unable to create file...DrumFolderNames.txt". Hitting either Cancel or OK shuts down the app. The drum files appear to be in the Drums folder, at least many files with the appropriate creation time are there. Permissions for the BIAB folder, and the drums folder are set to full read/write. A reboot doesn't help. I have also tried re-installing the application (no real drums) and a launch attempt gives the same result. Any suggestions would be appreciated.