i can't even open mail now with the new beta installed...worked fine in beta 1 and 2...
xception Name: NSInternalInconsistencyException
Description: (null) should not be expanded already!
User Info: (null)
0 CoreFoundation 0x00007fff9694c735 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00007fff9220a13a objc_exception_throw + 48
2 CoreFoundation 0x00007fff9694c50a +[NSException raise:format:arguments:] + 106
3 Foundation 0x00007fff9c00cbcc -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 198
4 AppKit 0x00007fff8f223709 -[NSOutlineView _expandItemEntry:expandChildren:startLevel:] + 1205
5 AppKit 0x00007fff8f3fee07 -[NSOutlineView reloadItem:reloadChildren:] + 2522
6 Mail 0x000000010800d8d4 Mail + 227540
7 Mail 0x000000010800d559 Mail + 226649
8 CoreFoundation 0x00007fff96905cac __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
9 CoreFoundation 0x00007fff9690530b _CFXRegistrationPost + 427
10 CoreFoundation 0x00007fff96905072 ___CFXNotificationPost_block_invoke + 50
11 CoreFoundation 0x00007fff96901690 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1664
12 CoreFoundation 0x00007fff967f1224 _CFXNotificationPost + 628
13 Foundation 0x00007fff9bf51bdd -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
14 Mail 0x0000000107fe54d6 Mail + 62678
15 CoreFoundation 0x00007fff96905cac __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
16 CoreFoundation 0x00007fff9690530b _CFXRegistrationPost + 427
17 CoreFoundation 0x00007fff96905072 ___CFXNotificationPost_block_invoke + 50
18 CoreFoundation 0x00007fff96901690 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1664
19 CoreFoundation 0x00007fff967f1224 _CFXNotificationPost + 628
20 Foundation 0x00007fff9bfe1d34 postQueueNotifications + 782
21 CoreFoundation 0x00007fff9685cf17 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
22 CoreFoundation 0x00007fff9685ce87 __CFRunLoopDoObservers + 391
23 CoreFoundation 0x00007fff9684f7b8 __CFRunLoopRun + 856
24 CoreFoundation 0x00007fff9684f1f8 CFRunLoopRunSpecific + 296
25 HIToolbox 0x00007fff8d54ba59 RunCurrentEventLoopInMode + 235
26 HIToolbox 0x00007fff8d54b6f7 ReceiveNextEventCommon + 184
27 HIToolbox 0x00007fff8d54b62f _BlockUntilNextEventMatchingListInModeWithFilter + 71
28 AppKit 0x00007fff8f12479c _DPSNextEvent + 945
29 AppKit 0x00007fff8f4f25c9 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 343
30 AppKit 0x00007fff8f11a6dc -[NSApplication run] + 682
31 AppKit 0x00007fff8f09cb6d NSApplicationMain + 1176
32 libdyld.dylib 0x00007fff914665ad start + 1