Lutz, ironically enough, that's the exact same piece of software that we use (TotalHTMLConverter) and unfortunately, you will need to use the code I provided in order for it to work unattended - that's where I took the snippet of code from (or last implementation of the software on a new server) 🙂
______________________________________________________________________________Never argue with an idiot; Theyll drag you down to their level and beat you with experience