I can't seem to assign Midi Controls to anything. I hit the little Midi Plug symbol to tuen 'Midi Assign On' and all the knobs and faders turn purple. I then select the Sub Oscillator VCO and the Midi Control Setup box opens, but it won't let me change anything. Am I being really dumb and missing something here
Hi and welcome to Arturai forums.
Are you saying you are moving a control when the Midi learn dialog box is open, but it's not being assigned to the chosen parameter? You can't type a CC number you just need to move the hardware control you wan't to assign to the parameter until you see the parameter moves on the screen.
What control are you trying to assign?
Are you talking about the standalone application or the plug-in? If plug-in, then what DAW are you using?
Are you have Midi learn issues with other applications both Arturias and others?
What controller are you using?
What OS are you using?
All this can be important informations to have.