It looks like the Breadcrumb NavXT 3.0 Beta 2 has an issue with migrating settings over from 2.1.x. The SVN trunk should have a fix for this, please download that instead of Beta 2 at this time. A few other miscellaneous things are preventing the full release. Expect these to be cleared up by Thursday. Thus, the release will happen either Thursday evening, or Sunday night. Oh, and WPMU should be supported by the SVN Trunk version now, but it needs testing by WPMU users.
Download Breadcrumb NavXT – SVN Trunk.
[end of transmission, stay tuned]