MIDI learning FX knobs not working

first off sorry to double post admin please remove my post about this in tips and tuts
i have the nanoKontrol MIDI controller and i'm having problems getting the fx knobs to maps using the learn function i've was able to map the FX wet/dry and the first FX knob that controls the effect (ie the delay knob on the echo effect) but i can't learn the other buttons. they show up in the MIDI config file but don't do anything. i'm running DVS 7.1 and its a fresh install as of this morning please hep
i have the nanoKontrol MIDI controller and i'm having problems getting the fx knobs to maps using the learn function i've was able to map the FX wet/dry and the first FX knob that controls the effect (ie the delay knob on the echo effect) but i can't learn the other buttons. they show up in the MIDI config file but don't do anything. i'm running DVS 7.1 and its a fresh install as of this morning please hep