Hi Hecticcc,
I appreciate your great efforts on creating a this panel.
I know that programming is a lot of work.
Today I checked V1.2.4 with an E6400 Ultra, EOS 4.70.
The device is recognized correctly.
On thing that did not work is the selection of the sample.
Although the samples are displayed with their correct names in the panel, the sample is not switched in the sampler.
In regards to the preset programming, I recommend not to subsume the Amplifier Envelope, Filter Envelope and Auxiliary Envelope under a general Envelope tab. I think it will be more handy if there is a tab for each Envelope in the top hierarchy.