(Ignore just getting to the word count for the app)
Since it's a third party, a link to their website/product would help. What version of Kontakt are you using and what's your operating system?
Also before checking in Logic, please try to opem Kontakt in standalone, choose an audio device (coreaudio for Mac or ASIO for Windows), select your MIDI devices as input in Kontakt's options - MIDI. Does it work there?