iTunes error 421 when using sound file mode
Virtual CD v. 10.1.0.13
CD Control Center v. 10.0.0.632
iTunes v. 10.3.1.55
OS: Windows 7 Professional (64-bit)
When using iTunes to burn Audible.com *.aa and *.aax files to the Virtual Burner using any size blank (702 MB, 766 MB, 830 MB, 256.0 GB, these are the online sizes I've tried) iTunes cancels the process returning: "The attempt to burn a disc failed. An unknown error occurred (421)." However, using standard blanks, i.e., not sound file mode, it will burn without an issue.
Any guidance you could offer to help remedy this would be greatly appreciated.