A quick site search didn’t find an answer, so please excuse what must be a redundant topic.
New A4 MKII, Macbook 12 10.13.6, C6 1.51.
I followed the sound pack installation recipe exactly, with no problems. The A4 is ready to receive via MIDI+USB and the empty bank is flashing “WAITING DATA…” C6 config shows the A4 for both MIDI in and out. I drop the purchased sound pack, 1991.syx, onto the C6 window, and it’s highlighted. When I click the [SEND] button, the button flashed and then nothing happens: no progress in C6’s progress bar, and the A4 continues to flash its message. Any troubleshooting suggestions?