Surrounding the SOAP.connect() with a app.trustedFunction (to get an trusted context) will also fail with the same error message.
The PDF i loaded into Adobe Reader 9 (free Edition! without an [LS] Extensions installed) is granted with forms rights, so the required F Flag (API Reference) should be not the problem.
Is that a problem with the free Reader Edition or a (solvable) permissions problem?
Thanks in advance