Jesse,
The problem is BBP uses 1 config file to load the plugins for all of the instances, so if I have plugin1 & plugin2 in instance 1, when I go to Instance 2 I have plugin1 & plugin2, even though I want plugin3 & plugin4 for instance 2.
All instances of BBP use the same EffectMuxer.ini and EncMuxer.ini INI files for the effect and encoder plugins. The 2nd instance of BBP needs to look to a file name such as EffectMuxer2.ini & EncMuxer2.ini, or they need to be listed for each instance in the INI file.
Try a multi instance of BBP, load plugins in the 1st one. Open a 2nd instance of BBP and look at what plugins are there, it will be everything that is in BBP1, change the plugins in BBP2 and reopen BBP1, and the BB2 plugins will now be in BBP1.
Hopefully that makes sense…
btw, love your work on the presets.