AnyDVD - disc is empty?

Little Problem here with AnyDVD (maybe, could be another reason).
After installing the latest version I burned a DVD-Video - so far, so good.
It plays in my StandAlone - even better.
But Windows (XP Prof. SP1 incl. all updates) doesn´t show me the content of the media.
It says disc is empty? Never had that problem before, so my first suspect was/is AnyDVD, anyone else with same symptoms?
I changed the settings in the drive-tab, first there were both drives activated, I changed it to just activate my dvd-rom but that didn´t help.
Any help would be appreciated.