I reverted back to gmpc 11.8.16-6 from Testing and the plugins are working again.
If you experience the same issue and already upgraded to the newest verion from Sid then do this:
Download gmpc and gmpc-data from the Testing repo and in my case
Code: Select all
dpkg -i gmpc_11.8.16-6_i386.deb gmpc-data_11.8.16-6_all.deb
If you want to prevent the bug or a future upgrade until it is fixed put gmpc and gmpc-data on hold.
If I am in the mood I will send a bug report.
Edit: The bug report