Forum .LRN Q&A: Problem when I am installing packages

I have installed openACS and dotlrn 1.0. When I am installing all packages (in packages-manager) and it loading data-model, my browser give it the next error in the end.

HTTP/1.0 500 Internal Server Error Content-Type:text/html;
charset=iso-8859-1 MIME-Version: 1.0 Date: Wed, 05 Feb 2003 18:05:11 GMT Server
AOLserver/3.3.1 +ad13 Content-Length:533 Connection: Close
Server error
The requested URL cannot be accessed due to a system error on this server. AOLsever/3.3.1+ad13 on http://mydomain:8000

Please, can someone help me?

Thank you.