While goofing around with my Hudson CI tool, I noticed there was an update. I was a couple versions back, and the install is easy enough (undeploy old WAR, deploy new WAR), so I figured "why not."

Evidently the new WAR uses JNI to get to the ZFS file system when running on Solaris. This is broken, at least on my Solaris 9 installation, as there is no ZFS, and therefore no libzfs for it to find.

Had to find and reinstall the older version. Will keep my eyes peeled for an update.