Simulator crashes 9/10 times when loading app settings

Dear all,

Almost every single time I select my project in the App Settings Editor, the simulator crashes with the following error:
Socket Error in packet header 0

I'm trying to change settings while my data field is running to simulate a user changing settings during runtime.

Any advice on what I'm doing wrong?

Thanks in advance for any help!

P.S. I'm running on Mac OS X El Capitan (10.11.5) using SDK 1.2.9