There should be three packages to install with ActivePerl. DBI, DBD-MYSQL and IO-STRINGY. Did you miss one?
Also doublecheck your config file and make sure there's no funky alternate pathing for:
Code:
<directories>
<!-- <maps>Maps</maps> -->
<!-- <quests>quests</quests> -->
<!-- <plugins>plugins</plugins> -->
</directories>
In fact, I'd just remove this block altogether from your config and rely on the internal defaults.