Unity won't start from command line

I'm using scripting to let unity automatically generate iOS Assets. Everything is running fine in Unity 4.3.1, but every 4-5 time Unity won't start anymore giving me continuously the error below. The only workaround, is to shortly start Unity normal with GUI, immediately exiting it.

Any suggestions?

Thomas

 [Unity stdout] Initialize mono
 [Unity stdout] Mono path[0] = '/Applications/Unity/Unity.app/Contents/Frameworks/Managed'
 [Unity stdout] Mono path[1] = '/Applications/Unity/Unity.app/Contents/Frameworks/Mono/lib/mono/2.0'
 [Unity stdout] Mono config path = '/Applications/Unity/Unity.app/Contents/Frameworks/Mono/etc'
 [Unity stdout] Using monoOptions --debugger-agent=transport=dt_socket,embedding=1,defer=y
 [Unity stderr] 2013-12-12 09:43:08.824 Unity[51721:507] NSDocumentController Info.plist warning: The values of CFBundleTypeRole entries must be 'Editor', 'Viewer', 'None', or 'Shell'.
 [Unity stdout] Receiving unhandled NULL exception
 [Unity stdout] Launching bug reporter
 [Unity stdout] Obtained 30 stack frames.
 [Unity stdout] #0  0x00000097c127f0 in strlen
 [Unity stdout] #1  0x0000000134a960 in LicenseManager::AppendSystemInfoXML(std::string&)
 [Unity stdout] #2  0x0000000134e186 in LicenseManager::TransmitLicenseFile(std::string)
 [Unity stdout] #3  0x0000000134e316 in LicenseManager::QueryLicenseUpdate()
 [Unity stdout] #4  0x0000000134523f in LicenseInfo::QueryLicenseUpdate(bool)
 [Unity stdout] #5  0x000000011fa760 in Application::InitializeProject()
 [Unity stdout] #6  0x000000013aadbe in -[EditorApplication applicationDidFinishLaunching:]
 [Unity stdout] #7  0x000000970a1692 in __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke
 [Unity stdout] #8  0x0000009186b7e4 in __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__
 [Unity stdout] #9  0x0000009174d3fb in _CFXNotificationPost
 [Unity stdout] #10 0x0000009708febf in -[NSNotificationCenter postNotificationName:object:userInfo:]
 [Unity stdout] #11 0x000000944b87d5 in -[NSApplication _postDidFinishNotification]
 [Unity stdout] #12 0x000000944b8475 in -[NSApplication _sendFinishLaunchingNotification]
 [Unity stdout] #13 0x000000944b4da4 in -[NSApplication(NSAppleEventHandling) _handleAEOpenEvent:]
 [Unity stdout] #14 0x000000944b4691 in -[NSApplication(NSAppleEventHandling) _handleCoreEvent:withReplyEvent:]
 [Unity stdout] #15 0x00000092038304 in -[NSObject performSelector:withObject:withObject:]
 [Unity stdout] #16 0x000000970b03fa in __76-[NSAppleEventManager setEventHandler:andSelector:forEventClass:andEventID:]_block_invoke
 [Unity stdout] #17 0x000000970aff31 in -[NSAppleEventManager dispatchRawAppleEvent:withRawReply:handlerRefCon:]
 [Unity stdout] #18 0x000000970afd3b in _NSAppleEventManagerGenericHandler
 [Unity stdout] #19 0x000000974d8b15 in aeDispatchAppleEvent(AEDesc const*, AEDesc*, unsigned long, unsigned char*)
 [Unity stdout] #20 0x000000974a7ed6 in dispatchEventAndSendReply(AEDesc const*, AEDesc*)
 [Unity stdout] #21 0x000000974a7dce in aeProcessAppleEvent
 [Unity stdout] #22 0x0000009390b7c1 in AEProcessAppleEvent
 [Unity stdout] #23 0x000000944b03a8 in _DPSNextEvent
 [Unity stdout] #24 0x000000944afad0 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
 [Unity stdout] #25 0x000000944a235c in -[NSApplication run]
 [Unity stdout] #26 0x0000009448b1f8 in NSApplicationMain
 [Unity stdout] #27 0x000000013bd31b in EditorMain(int, char const**)
 [Unity stdout] #28 0x000000013bd6c8 in main
 [Unity stdout] #29 0x000000000038b5 in start
 [Unity stderr] 
 [Unity stdout] * Assertion at mini-exceptions.c:1604, condition `err == 0' not met
 [Unity stdout] 
 [Unity stderr] Unhandled Exception: System.ExecutionEngineException: SIGILL