SLA Widget Issue

I have come across an issue whilst trying to implement the SLA Widget in a dashboard reporting on Service Level Objectives for a Distributed Application I have created with SCOM 2012 R2.

The name of the SLO always displays as ManagementPackMonitorSLO{GUID} -even though I have set the name correctly in Service Level Tracking.

See attached.

Any ideas how I can resolve this issue?