An unhandled exception was encountered while processing a VSS writer event callback. The VSS writer infrastructure is in ...

An unhandled exception was encountered while processing a VSS writer event callback.  The VSS writer infrastructure is in an unstable state. The writer hosting process must be restarted in order to resume VSS functionality.
 
 Writer name:            %1
 Writer id:              %2
 Writer instance:        %3
 Process command line:   %4
 Process ID:             %5
 Writer operation:       %6
 Writer state:           %7
 Exception code:         %8
 Exception location:     %9