I built against the phoenix snapshot (3, 0, 3, '.dev1830+0b5f910’) and get this:
13 Sep 2015 18:14:58.863 Barry's Emacs[5647]: WARNING: The Gestalt selector gestaltSystemVersion is returning 10.9.5 instead of 10.10.5. Use NSProcessInfo's operatingSystemVersion property to get correct system version number.
Call location:
13 Sep 2015 18:14:59.011 Barry's Emacs[5647]: 0 CarbonCore 0x00007fff9aa7d2b7 ___Gestalt_SystemVersion_block_invoke + 113
13 Sep 2015 18:14:59.011 Barry's Emacs[5647]: 1 libdispatch.dylib 0x00007fff94724c13 _dispatch_client_callout + 8
13 Sep 2015 18:14:59.011 Barry's Emacs[5647]: 2 libdispatch.dylib 0x00007fff94724b26 dispatch_once_f + 117
13 Sep 2015 18:14:59.011 Barry's Emacs[5647]: 3 CarbonCore 0x00007fff9aa06456 _Gestalt_SystemVersion + 987
13 Sep 2015 18:14:59.012 Barry's Emacs[5647]: 4 CarbonCore 0x00007fff9aa056e3 Gestalt + 144
13 Sep 2015 18:14:59.012 Barry's Emacs[5647]: 5 libwx_osx_cocoau-3.0.0.3.0.dylib 0x0000000105698f3f _Z19UMAGetSystemVersionv + 31
13 Sep 2015 18:14:59.012 Barry's Emacs[5647]: 6 libwx_osx_cocoau-3.0.0.3.0.dylib 0x00000001057e9977 _ZN9wxToolBar12DoInsertToolEmP17wxToolBarToolBase + 3015
13 Sep 2015 18:14:59.313 Barry's Emacs[5647]: Barry's Emacs Error
13 Sep 2015 18:14:59.313 Barry's Emacs[5647]: 2015-09-13 18:14:59.313 Barry's Emacs[5647:16951] Barry's Emacs Error
Hopefully this means something to you.
Barry