I am glad I found this website because I have a problem:
" C note appears as D# in my DAW "
Currently I am using Logic Pro X as my primary DAW and Reason as my secondary. My midi keyboard is a Nektar ix49 and a Akai LPD8 on a Mac Pro with OS EC.
After I updated to EC 10.11.6 and installed some new plugins my problem was solved for a short time.
I tried al my midi ports, reset the midi driver and tested my midi keyboard in the midi configuration screen and still have the same problem.
Please tell me if you know a solution to this problem.