Well..... I don't know what's going on with this but I'm using Mac OS 10.8.2 (probably hackintosh ^^) and having this issue
init: sdl
init: net
init: game
init: video
init: gl
Renderer: NVIDIA GeForce GT 525M OpenGL Engine (NVIDIA Corporation)
Driver: 2.1 NVIDIA-8.0.61
Rendering using the OpenGL GLSL shader path.
could not load texture packages/textures/notexture.png
could not find core textures
2015-07-07 13:57:59.670 sauerbraten[1012:707] *** Assertion failure in -[_NSWindowFullScreenTransition enterFullScreenTransitionWithOptions:animated:activatingIt:], /SourceCache/AppKit/AppKit-1187.34/AppKit.subproj/NSWindowFullScreenTransition.m:1078
2015-07-07 13:57:59.671 sauerbraten[1012:707] An uncaught exception was raised
2015-07-07 13:57:59.671 sauerbraten[1012:707] backgroundWindows not nil in enterFullScreenTransitionWithOptions:animated:activatingIt:
2015-07-07 13:57:59.672 sauerbraten[1012:707] (
0 CoreFoundation 0x00007fff892840a6 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8b38d3f0 objc_exception_throw + 43
2 CoreFoundation 0x00007fff89283ee8 +[NSException raise:format:arguments:] + 104
3 Foundation 0x00007fff8bb6d6a2 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 189
4 AppKit 0x00007fff93cd6df7 -[_NSFullScreenTransition enterFullScreenTransitionWithOptions:animated:activatingIt:] + 284
5 AppKit 0x00007fff93b85afc -[NSWindow _enterFullScreenMode:animating:activating:] + 278
6 Foundation 0x00007fff8bbf3677 __NSThreadPerformPerform + 225
7 CoreFoundation 0x00007fff89203101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
8 CoreFoundation 0x00007fff89202a25 __CFRunLoopDoSources0 + 245
9 CoreFoundation 0x00007fff89225dc5 __CFRunLoopRun + 789
10 CoreFoundation 0x00007fff892256b2 CFRunLoopRunSpecific + 290
11 HIToolbox 0x00007fff8b7bc0a4 RunCurrentEventLoopInMode + 209
12 HIToolbox 0x00007fff8b7bbd84 ReceiveNextEventCommon + 166
13 HIToolbox 0x00007fff8b7bbcd3 BlockUntilNextEventMatchingListInMode + 62
14 AppKit 0x00007fff935b2613 _DPSNextEvent + 685
15 AppKit 0x00007fff935b1ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
16 sauerbraten 0x0000000100275693 sauerbraten + 2578067
)
2015-07-07 13:57:59.673 sauerbraten[1012:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'backgroundWindows not nil in enterFullScreenTransitionWithOptions:animated:activatingIt:'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff892840a6 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8b38d3f0 objc_exception_throw + 43
2 CoreFoundation 0x00007fff89283ee8 +[NSException raise:format:arguments:] + 104
3 Foundation 0x00007fff8bb6d6a2 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 189
4 AppKit 0x00007fff93cd6df7 -[_NSFullScreenTransition enterFullScreenTransitionWithOptions:animated:activatingIt:] + 284
5 AppKit 0x00007fff93b85afc -[NSWindow _enterFullScreenMode:animating:activating:] + 278
6 Foundation 0x00007fff8bbf3677 __NSThreadPerformPerform + 225
7 CoreFoundation 0x00007fff89203101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
8 CoreFoundation 0x00007fff89202a25 __CFRunLoopDoSources0 + 245
9 CoreFoundation 0x00007fff89225dc5 __CFRunLoopRun + 789
10 CoreFoundation 0x00007fff892256b2 CFRunLoopRunSpecific + 290
11 HIToolbox 0x00007fff8b7bc0a4 RunCurrentEventLoopInMode + 209
12 HIToolbox 0x00007fff8b7bbd84 ReceiveNextEventCommon + 166
13 HIToolbox 0x00007fff8b7bbcd3 BlockUntilNextEventMatchingListInMode + 62
14 AppKit 0x00007fff935b2613 _DPSNextEvent + 685
15 AppKit 0x00007fff935b1ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
16 sauerbraten 0x0000000100275693 sauerbraten + 2578067
)
libc++abi.dylib: terminate called throwing an exception
Abort trap: 6
logout
[Process completed]