Description of problem:
Trying to list active process instances results in many error modal dialogs

Version-Release number of selected component (if applicable):
BPMS 6.2.0.ER3

How reproducible:
Always

Steps to Reproduce:
1. Start process definition eg. simple timer
2. Go to process instances and click the Active tab
3. See many error dialogs (3-10): Can't lookup on specified data set: jbpmProcessInstances: org.dashbuilder.dataset.exception.DataSetLookupException: Can't lookup on specified data set: jbpmProcessInstances

Actual results:
Error messages

Expected results:
Listing the active instances

Additional info:
ERROR [org.dashbuilder.dataset.backend.exception.ExceptionManager] (http-localhost/127.0.0.1:8080-17) Can't lookup on specified data set: jbpmProcessInstances: org.dashbuilder.dataset.exception.DataSetLookupException: Can't lookup on specified data set: jbpmProcessInstances
at org.dashbuilder.dataset.backend.BackendDataSetManager.lookupDataSet(BackendDataSetManager.java:134) [dashbuilder-dataset-core-0.3.2.Final-redhat-1.jar:0.3.2.Final-redhat-1]
at org.dashbuilder.dataset.backend.BackendDataSetManager$Proxy$$$_WeldClientProxy.lookupDataSet(BackendDataSetManager$Proxy$$$_WeldClientProxy.java) [dashbuilder-dataset-core-0.3.2.Final-redhat-1.jar:0.3.2.Final-redhat-1]
at org.dashbuilder.dataset.backend.DataSetLookupServicesImpl.lookupDataSet(DataSetLookupServicesImpl.java:72) [dashbuilder-services-0.3.2.Final-redhat-1.jar:0.3.2.Final-redhat-1]
at org.dashbuilder.dataset.backend.DataSetLookupServicesImpl$Proxy$$$_WeldClientProxy.lookupDataSet(DataSetLookupServicesImpl$Proxy$$$_WeldClientProxy.java) [dashbuilder-services-0.3.2.Final-redhat-1.jar:0.3.2.Final-redhat-1]