If you save a studio setup to the desktop with JackOSX 0.89, and then double click the file, JackOSX will pop up with the following error message:
"The document “headphones.jks” could not be opened. JackPilot cannot open files in the “Jack Studio Setup” format."
This is quite strange, because JackPilot saved this file and now can not open it..... JackPilot of course can open it, if I manually use the menu entry "Load Studio Setup...".
Please fix it in a way you just have to double click the file and JackPilot loads and enables this configuration.