I was assigning a MIDI controller in Sonar Artist and guess i touched
the G2 key (only thing i can think of) - NOW Sonar won't recognize
note on from G2 - i can transpose my MPK61 & it does it up and down keyboard!
- works fine on standalone VST's - REASON - LIVE
- ONLY Sonar Artist!!!
ideas?
 

Have you assigned the key in "ACT MIDI" / "Generic Control" Control Surface plug-in?
It can be that some buttons also send "Note On" events, so clashing with normal keys.
 

Also, there is a method for MIDI keyboard shortcuts that can dedicate one MIDI key as a shift key. Look in Edit->Preferences->Customization - Keyboard Shortcuts. At the top, if MIDI shortcuts are enabled, and the "MIDI shift option" is the G2 key, that prevents the note from playing from the keyboard.

ACT (or me) culprit - i guess
i reinstalled X2 & Artist started working OK
 
thanks all!!