Problem connecting zetadocs to sharepoint

Hi,

I have installed the Zetadocs Express for Navision Database (2009 R2). I followed the guide step by step.  Now when i want to add a document to NAV i get this error.

Translation: Can't upload document to SharePoint. A problem has occurred  with the documentlibrary "Zetadocs' in sharepoint.

Both Zetadocs content type and Zetadocs document library are activated in our sharepoint. 

What did i do wrong?

Thanks in advance