Getting exception when attempting to do a metadata search in Designer

I'm getting exceptions when attempting a metadata search - after I've imported and rebuilt a model project in Designer. To reproduce:
1) Import the attached SearchProject.zip into Designer (Import... > General > Existing Projects into Workspace
2) After import the project has (for me) 27 errors. To correct the errors, 1) close project, 2) open project, 3) rebuild project. Then the project is error free.
3) Attempt a metadata search. (Search > Teiid Designer > Metadata...) The search attempt results in the attached stack trace.
4) Either a) Close JBDS and Restart or b) delete the offending VDB from #3 will clear things up and eliminate the exception.