Class not found in Teiid JON agent

While trying to delete a VDB form my server, it was noticed the agent's log showed a missing class.

2011-01-07 10:26:54,366 WARN [MeasurementManager.collector-1] (rhq.core.pc.measurement.MeasurementCollectorRunner)- Failure to collect measurement data for Resource[id=10301, type=Data Services, key=RuntimeEngineDeployer, name=Data Services, parent=sllxqm27:1099 production, version=7.1.1] - cause: java.lang.Exception:java.lang.NoClassDefFoundError: Could not initialize class org.teiid.adminapi.impl.SessionMetadataMapper -> java.lang.NoClassDefFoundError:Could not initialize class org.teiid.adminapi.impl.SessionMetadataMapper

Attaching the whole log file for further analysis.