I have not been able to track the point of failure down yet. I assume that it is some application that is attempting to start at system startup, but I have not yet been able to isolate the application or daemon. The actual problem report seems to be quite unhelpful in this case:
Process: python2.7  Path: /Users/USER/*/python2.7 Identifier: python2.7 Version: ??? Code Type: X86-64 (Native) Parent Process: ???  Responsible: python2.7  User ID: 501 Date/Time: 2015-09-18 16:22:28.150 -0400 OS Version: Mac OS X 10.11 (15A282b) Report Version: 11 Anonymous UUID: 032A40CC-C2C4-1235-F611-B0961DE616DB Time Awake Since Boot: 5100 seconds System Integrity Protection: disabled Crashed Thread: 0 Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Application Specific Information: dyld: launch, loading dependent libraries Dyld Error Message: Library not loaded: @executable_path/../.Python Referenced from: /Users/USER/*/python Reason: image not found Binary Images: 0x7fff67746000 - 0x7fff6777cf5f dyld (360.14) <DF977301-4A63-32ED-9939-1EE3122D18D4> /usr/lib/dyld
I thought that perhaps it was an issue with
Homebrew's python installation, but after removing and re-adding it, this does not appear to be the case.