I had the same issue with the version 10.5 and Cisco TAC recommended the upgrade to the 10.6.1. After upgrade everything started to work. Since the version 11 is way better I suggest you to upgrade directly to it.
HTH
Felipe Braga
The OVA for Prime Infrastructure and Collaboration are different. But the OVA for Prime Collaboration standard and advanced are the same. You can download it here:
https://software.cisco.com/download/navigator.html?mdfid=284255727&i=rm
You will need ...