a0cd43132b
Processor changes trigger configure_io() which resulted in a call to reset_write_sources(), which is a disaster while recording. This allows adding plugins while recording, and prevents adding any plugins before the disk-writer that change the channel-count while recording, or changing strict-i/o to the same effect.
Please see the Ardour web site at https://ardour.org/ for all documentation..
For information on building ardour:
https://ardour.org/development.html