Nima,
I will take the second error first, because it is easier. All PDF generation requires that HTMLDoc http://www.easysw.com/htmldoc/ is installed on your server. Kind of a hassle, but we needed the flexibility of PDFs for printable documents.
The first error is a little more difficult. My first guess is that the create user functionality did not work on the openacs side, perhaps due to a lack of permissions for the login you were using. The admin for OpenCore module has only been tested using a sitewide openacs admin login. If user creation permissions are not the issue, would you mind capturing a log entry for me when you create a user with the OpenCore admin?
Thanks for your interest.
Chip
