Error with WFStubMachineProvisoned - "Cannot execute workflow : ModelObjectRelation, not loaded when accessing ( get() )"

Hi,

I have a standalone vCO (5.5.1) configured with vCAC 6.0.1 .

Custom workflows have been written to do some tasks once the machine is provisioned from vCAC. Workflow Stubs are being used for this.

I am facing a very strange issue.

Once a VM is provisioned, at the vCO side, WFStubMachineProvisioned workflow is throwing the following error:

"Cannot execute workflow : ModelObjectRelation, not loaded when accessing ( get() )"

Not sure why this error is popping out.

Hope anybody in the community can help me out.

Thanks,

SK