For the pet problem make sure you have applied the new changes to your Database as the ChangeLog states
Code:
==12/11/05
FatherNitwit: Removed some worthless fields.
FatherNitwit: Rewrote all the pet creation code to be based on npc_types
FatherNitwit: Completely changed the pets table.
You prolly want to run:
DROP TABLE pets;
You must load up the SQL in Sql-Files/pets.sql
the new pets sql assumes NPC IDs 500-700 are free, so edit them as needed.
ALTER TABLE npc_types DROP fixedz;
If you have already applied these changes and are still experiencing issues then please give a more detailed description of the problem and copy any error messages output in the zone server.