Posted
This occurs with either 1.8.5 or 1.9.
When restarting Synfire after an AudioEngine crash there are duplicate instances of the modules on the Global Rack.
Fr., 22.02.2019 - 19:54 Permalink
If some plug-in crashed the Engine, it is sufficient to just restart the Engine and Synfire will re-populate it with the plug-ins previously loaded. You can restart any Engine on the Audio tab of the Audio & MIDI Setup window.
After an Engine crashed, Synfire might need to wait for a timeout to expire before it gets responsive again (e.g. when the Engine happened to crash in the middle of a call from Synfire). This can take up to a minute, depending on the type of call that was interrupted.
There shouldn't appear duplicate modules in the rack, though. I'll check how that is even possible.