Eclipse + Hibernate Tools -> No-Go

Hi, Does anyone here use Eclipse, Hibernate and the Hibernate tools for Eclipse under SuSE Linux? I cannot get them to work. E.g., the Hibernate mapping and configuration XML editor extensions do not work at all. I'm running Eclipse 3.1.1 (I've tried both the tarball release from Eclipse.org and the SuSE-supplied RPM with the same results) using the SuSE-supplied Java SDK 5.0 / 1.5 (specifically, 1.5.0_03-b07). I've tried both the latest release of the Hibernate tools (3.1.0beta1) and a recent nightly build (3.1.0.N200511302034) with the same results. I use a similar configuration under Redhat EL 3 at work, and all is well there. Any hints on solving or diagnosing the problem would be welcome. Thanks. Randall Schulz