Desperately Need Your Help !!! MIDI

[weezamiah]

Problem : I have a Kurzweil 2600se as a midi controller. When playing VI's, some of the tones in the scale are the same. For instance if i play a c maj scale, c tone is correct but D plays an E/flat tone but E/flat also plays the same tone. G/flat and g are the same; B/flat and B are the same tone also. No matter what key I play it takes on this same character. Now when i use headphones and no computer hooked up every thing plays correctly. Also no matter what software logic, Pt or standalone VI's I play this happens. Anybody ever heard of this? All software and midi drivers are up to date. Even did a reset on the keyboard without success.