Got it! I recaptured and took another look at the project folder.
At first I through all emtpy folders away, including %appdata% %personal% etc. to try to make it as small as possible.
But apperently I cleaned too roughly so that the package does not know how to handle the folder integration.
I have exactly the same content in the ProgramFilesDir but I left the other (emtpy) %something% folder that are there by default, including there ##Attributes.ini
This helped the integration of word to work again.
Thanks.
Arnold Veenema