PeerGuardian error when shutting down the PC

I keep getting this error wherever I have peerguardian running and I shut down my system.
I have to press end now in order for the shutdown process to complete.

An exception occurred!
This problem has been automatically reported to Methlabs.
The report contains the following information:
Build Number:2050918
File: pgfilter_ng.cpp
Line: 66
Type: class driver error
Message: ControlService: a stop control has been sent to a service that other running services are dependent on.
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