I have the problem to get information from the user manuels.
When I do downloading a PFD-sheet then I got the message "TCPDF ERROR: Could not include font definitionfile: helvetica."
In kdenlive self the help button gives as answer "could not launch the KDE Help Center" could not find the service khelpcenter".
I am e newbie. Comming from windows environment. Since a couple of years I am using Ubuntu 64bit. The recent version is 11.10.
I ask help to fix the problems.