Latest one was the result. I used Encore, burned directly to DVD and it worked with tiger, leopard, snow leopard and lion, widows and dvd players. At least with me.
Now the production company called me again, telling me, that it doesn’t play on their macs. The lady working there told me that she now simply opened the dvd and pulled the video_ts folder to a new disc which got the dvd playing with their computers and dvd players. Unfortunately I now have to confirm that this dvd master they created works.
Is there any method to now find out whether this disk now has the right structure? Simply testing it seems to not be doing the thing here.