I am having this issue as well. After obtaining the DVD9 iso, I attempted to open it with VLC to no avail, and then tried to mount it with Alcohol 52%.
It gets mounted successfully, but Windows won't read it. It says:
Title: Disk is not formattedWindows cannot read from this disk. The disk might be corrupted, or it could be using a format that is not compatible with Windows.
[OK]