Trying to change Guitar Rig (Ableton Plugin) presets using Max4Live

Gabriel Stern's icon

I use a Max4Live audio effect called Kapture, which allows me to capture (take snapshots of) all parameters of an Ableton Live set at any point in time. I can then recall any one of these snapshots, which instantly sets the parameters to the values as they were when the snapshot was taken.

I'm able to change presets for all my plugins except for GR6. I can't get GR6 to respond to program changes generated by Kapture. GR6 does respond to program changes sent to it the "normal" way....from my MIDI controllers.

Kapture was developed by Liine in cooperation with Richie Hawtin. It is available free of charge, as a Live Pack on the Ableton site, but is no longer supported by Ableton or Liine. I'm new to M4L, but have some programming experience. Can anyone help me understand how Kapture might be changed to enable it to control GR6 presets with Max4Live?     
Thanks,
Gabriel Stern            

Source Audio's icon

https://www.native-instruments.com/forum/threads/program-change.433011/
https://www.native-instruments.com/forum/threads/midi-program-change-fix-non-rk-controller.433021/