如何阻止Pentaho'PAC搜索不存在的hsqldb实例？

I'm trying to get Pentaho's BI Server 3.10 up and running on CentOS and MySQL. I've followed the steps provided by Prashant Raju on his web site (and that have worked once before). The BI Server is running, but I can't get Pentaho's Administration Console (PAC) to start using the MySQL database. It always falls back to searching for a non-existant instance of HSQLDB's. Apparently everything is configured as should've been - obviously it's not, though...I'm trying to get Pentaho's BI Server 3.10 up a