If you are using section access, you need to have the service account running the QDS service set as ADMIN in the Section Access portion of the script of the source document, for the QVB engine (QlikView Distribution Service) to be able to open it.
And make sure you don't have any dynamic data reduction on that account, otherwise the source document will not open with full data.
first of all, thanks for the help.
Second: I already tried building in a extra line in the security, setting an ' * ' at the NTSID and giving it ADMIN-rights.
If I'm correct, Qlikview should read this as 'all NTSID's have ADMIN-rights'.
Even at that point, the server could not open the document...
If you have any more idea's or if I'm doing something wrong, your help would be appreciated .