It's getting better - at least a little bit for a few hours a day...How's your influenza going?
Could you please post the content of the qjackctl desktop file?
I found it's not necessary to have copies of the bristol binary, since it's just the names of bristol in the connect gui of qjackctl that changes.
So all bristol synths just start by the bristol binary, but they appear as bristol, bristol-01, bristol-02 (and so on) in the connect gui of qjackctl. So I just needed to tweak the part of code, that connects the bristol synthesizer to jack.
Meanwhile I'd included this into the RoxApp's GUI, where multiple bristol synthesizers can be chosen to start and all are successfully connected to jack. This means, one could choose up to 16 bristol synthesizers and all will connect to its own MIDI channel. By a template there will be a Rosegarden setup, that is immediately able to record and play 16 different bristol synthesizers.
Limitation atm.: they all use its default sound bank and default sound dependent to the synthesizer. So, still some tweaks to do to let the bristol synthesizers start into specific sound bank and sound.
Bristol has that much options and parameters to use, it seems these tweaks will never come to an end...
Though, I will delay re-development of Bristol-GUI to a much later date, as it is actually not needed and not of any use to have it added.
