Information Rights Management (IRM): Protector %1 threw an exception during a call to its HrIsProtected() function. Protector: ...

Information Rights Management (IRM): Protector %1 threw an exception during a call to its HrIsProtected() function.
Protector: %2
Current file: %3
GUID of current list: %4

HrIsProtected() checks for the existence of IRM protection on a file of the protector's file type.