Anyone know where or how I can get a DL for Controller Editor 1.5?

Since 1.6 I have a problem with MIDI Output on my F1-2 in midi mode.

NI have acknowledged the problem and are working on a fix, but everything was working fine before I changed to CE1.6. So I am hoping I can get a temporary fix by going back to 1.5.

This is a known software problem in Mavericks:
CE-1359 - MIDI output from devices lost when the controller editor is not running
Our developers are currently working on a solution. Please apologize the
inconvenience!