Habe auch das Problem das Xcode nicht startet.
Deinstalliert habe ich es schonmal aber leider hat es nichts gebracht.
Ich bin ein ziemlicher Neuling was Mac angeht.
Weiss eventuell jemand von euch weiter?
Danke vielmals für eure Hilfe!
ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilder/IDEInterfaceBuilder-1617/Framework/Utilities/IBFoundationAdditions.m:142
Details: Assertion failed: originalMethod != ((void*)0)
Function: void IBMethodSwizzle(Class, SEL, SEL)
Thread: <NSThread: 0x40010a260>{name = (null), num = 1}
Hints: None
Backtrace:
0 0x0000000102bd9152 -[IDEAssertionHandler handleFailureInFunction:fileName:lineNumber:messageFormat:arguments:] (in IDEKit)
1 0x00000001022731bc _DVTAssertionHandler (in DVTFoundation)
2 0x0000000102283304 _DVTAssertionFailureHandler (in DVTFoundation)
3 0x00000001052a10ae IBMethodSwizzle (in IDEInterfaceBuilderKit)
4 0x0000000105754070 -[IBCocoaPlugin init] (in IDEInterfaceBuilderCocoaIntegration)
5 0x00000001057539aa +[IBCocoaPlugin ide_initializeWithOptions:error:] (in IDEInterfaceBuilderCocoaIntegration)
6 0x0000000102765c0c _IDEInitializeOnePlugInAndPrerequisites (in IDEFoundation)
7 0x0000000102765405 IDEInitialize (in IDEFoundation)
8 0x0000000102adac0b -[IDEApplicationController applicationWillFinishLaunching:] (in IDEKit)
9 0x00007fff9279f216 __-[NSNotificationCenter addObserver:selector:name

bject:]_block_invoke_1 (in Foundation)
10 0x00007fff955f72aa _CFXNotificationPost (in CoreFoundation)
11 0x00007fff9269e17b -[NSNotificationCenter postNotificationName

bject:userInfo:] (in Foundation)
12 0x00007fff96c5f819 -[NSApplication finishLaunching] (in AppKit)
13 0x00007fff96c5f3e5 -[NSApplication run] (in AppKit)
14 0x00007fff96c5833d NSApplicationMain (in AppKit)
15 0x0000000102218eec (in Xcode)