Chad, thanks for the reply, but clearly one of us is doing something different if you can automate it "just fine." Could you elaborate?
The usual procedure as I understand it, and as it works in both certain Native Instruments VST instruments, and with Sylenth, is as follows:
1. Drag the VST to a new track in arrangement view. The VST's interface will appear.
2. Move any automatable control in the VST's UI... A knob, a slider, whatever.
3. Immediately, in that Ableton track, the Fades/Device Chooser changes to the VST instrument in question, and the Automation Control Chooser drop-down menu updates to include the control you just moved. If you move the control up and down, the red automation curve/line moves up and down with it, visibly, in Ableton's UI.
If I attempt to do that with ANY Cakewalk VST, it doesn't do what I just outlined. The device does NOT auto-select in the Device Chooser, and the parameter does NOT appear in the Automation Control Chooser menu.
I'm not sure how MIDI learn is an adequate workaround because I'm not talking about playing the instrument with a MIDI keyboard (or altering its sound via MIDI), I'm talking about automating its parameters programmatically in the Ableton UI. I've not tried it, so I don't know, but having to use MIDI learn to "connect" each parameter is pretty bogus when for other VST instruments (other than Cakewalk's), the steps I outlined above work perfectly and it's entirely automatic.
Let me know what you're doing differently that you are able to automate them without any trouble. Obviously I'm not doing it the same way.
Many thanks.