In Lion 10.7.4, if the General preference pane has set "Show scroll
bars" to "Automatically based on input device", then when my window
appears I see the following mess in the log. The other two preference
alternatives don't cause this. Any idea what's going on? (The input
device is a mouse, by the way.)
2013-06-12 18:43:26.049 XEditorDemo[2074:903] *** Assertion failure in
-[NSScrollView
scrollerImpPair:updateScrollerStyleForNewRecommendedScrollerStyle:],
/SourceCache/AppKit/AppKit-1138.51/AppKit.subproj/NSScrollView.m:4344
2013-06-12 18:43:31.549 CrossPlatformRTFEditorDemo[2074:903] Invalid
parameter not satisfying: scrollerImpPair == SCROLLER_IMP_PAIR
2013-06-12 18:43:31.553 CrossPlatformRTFEditorDemo[2074:903] (
0 CoreFoundation 0x9772ea67 __raiseError + 231
1 libobjc.A.dylib 0x995a3149 objc_exception_throw
+ 155
2 CoreFoundation 0x97696289 +[NSException
raise:format:arguments:] + 137
3 Foundation 0x9cc34233 -[NSAssertionHandler
handleFailureInMethod:object:file:lineNumber:description:] + 116
4 AppKit 0x915f1d2e
-[NSScrollView(NSPrivate)
scrollerImpPair:updateScrollerStyleForNewRecommendedScrollerStyle:] + 152
5 AppKit 0x9170a3a0 +[NSScrollerImpPair
_updateAllScrollerImpPairsForNewRecommendedScrollerStyle:] + 446
6 AppKit 0x9170a131 +[NSScrollerImpPair
_scrollerStyleRecommendationChanged:] + 159
7 Foundation 0x9cb70df1
__-[NSNotificationCenter
addObserver:selector:name:object:]_block_invoke_1 + 49
8 CoreFoundation 0x9766e903
___CFXNotificationPost_block_invoke_1 + 275
9 CoreFoundation 0x97639688 _CFXNotificationPost
+ 2776
10 Foundation 0x9cb5bfde
-[NSNotificationCenter postNotificationName:object:userInfo:] + 92
11 AppKit 0x9101bf9b
-[_NSScrollerStyleRecommender setRecommendedScrollerStyleAndNotify:] + 260
12 AppKit 0x9101be92
__-[_NSScrollerStyleRecommender
scrollerStyleRecommendationUpdateTimerFired:]_block_invoke_1 + 43
13 AppKit 0x9101be62
___NSDetectScrollDevicesThenInvokeOnMainQueue_block_invoke_3 + 32
14 libdispatch.dylib 0x974a3fbd
_dispatch_call_block_and_release + 15
15 libdispatch.dylib 0x974a5f4d
_dispatch_main_queue_callback_4CF + 260
16 CoreFoundation 0x97624d43 __CFRunLoopRun + 2003
17 CoreFoundation 0x976241dc CFRunLoopRunSpecific
+ 332
18 CoreFoundation 0x97624088 CFRunLoopRunInMode +
120
19 HIToolbox 0x92b20543
RunCurrentEventLoopInMode + 318
20 HIToolbox 0x92b278ab
ReceiveNextEventCommon + 381
21 HIToolbox 0x92b2771a
BlockUntilNextEventMatchingListInMode + 88
22 AppKit 0x90dd1ee8 _DPSNextEvent + 678
23 AppKit 0x90dd1752 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] + 113
24 AppKit 0x90dcdac1 -[NSApplication run]
+ 911
--
James W. Walker, Innoventive Software LLC
<http://www.frameforge3d.com/>
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