This seems to be a compatibility issue between the MySQL version (4.0.24) installed on your server and the MySQL client library PacsOne is using (based on version 4.1.x). You can try one of the following:
1. Upgrade MySQL installed on your server to the latest version 4.1.x release.
2. Download an older version of the MySQL client library that was built with MySQL 4.0.x:
http://www.pacsone.net/libmysqlpp.so.1.0.0.zip
Be sure to backup your current libmysqlpp.so.1.0.0 under /usr/local/lib, before replacing it with the older 4.0.x version and restart PacsOne Server.