If you find that the buttons don’t work when controlling a third-party plug-in, it’s likely because the plug-in uses it’s own patch browser. If you are using an Impact LX25 or LX25+, you will need to press the C3 key (labeled ‘Enter’) before you can change this setting.
You should now be able to control Logic’s mixer from Mixer Mode, and the instrument on the currently selected track in Instrument Mode. Run the latest installer (the latest installers can always be found on your Account page).
Start Logic and create an empty project (this is just so Logic creates a new cs file).Run the uninstaller located in that directory.In the Finder go to //Applications/Nektar/LX49 or //Applications/Nektar/Apple.Find .cs and move it to the trash (Important!).Open the ‘Go’ menu at the top of the screen.If the controls/keys on your Impact iX, GX, LX, LX+, or SE25/49 are behaving unusually or simply not working try this fix.