SOA-P 5.1 ER2 jbpm runtime is invalid for creating jBPM Project

1. New workspace
2. Create jbpm3 project
3. Try to define jBPM3 runtime from EAP 5.1.0.ER2 ($SOA_HOME/jbpm-jpdl/)
ERROR: This location does not contain a valid jBPM 3 runtime, please retry
After finishing, there is lot of errors related to unresolved types.