TF237090: Does not exist or access is denied, when usint witadmin importwitd

Hi all,

I installed a TFS2013 and attached our TFS2012 database. I can access the project and everything works fine. But now I want to upgrad our process template. When I try to upload a new work item, I get:

TF237090: Does not exist or access is denied.

When I download an existing work item, and upload it again, it works. Any ideas on this?

Thanks and regards, Sprengmeister