Assert in flatmodel when doing a build

Process: Qt Creator [72181]
Identifier: com.nokia.qtcreator
Version: 2.1.81 (2.1.81)
Code Type: X86-64 (Native)
Parent Process: launchd [32421]

Date/Time: 2010-12-07 14:01:36.525 +0100
OS Version: Mac OS X 10.6.5 (10H574)
Report Version: 6

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Application Specific Information:
abort() called

Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 libSystem.B.dylib 0x00007fff87837616 __kill + 10
1 libSystem.B.dylib 0x00007fff878d7cca abort + 83
2 QtCore 0x00000001000d6a35 qt_message_output(QtMsgType, char const*) + 117
3 QtCore 0x00000001000d6c17 qt_message(QtMsgType, char const*, __va_list_tag*) + 183
4 QtCore 0x00000001000d6dda qFatal(char const*, ...) + 170
5 libProjectExplorer_debug.dylib 0x0000000116b64656 ProjectExplorer::Internal::FlatModel::added(ProjectExplorer::FolderNode*, QList<ProjectExplorer::Node*> const&) + 220 (projectmodels.cpp:544)
6 libProjectExplorer_debug.dylib 0x0000000116b64d8a ProjectExplorer::Internal::FlatModel::filesAdded() + 90 (projectmodels.cpp:783)
7 libProjectExplorer_debug.dylib 0x0000000116be12c4 ProjectExplorer::Internal::FlatModel::qt_metacall(QMetaObject::Call, int, void**) + 444 (moc_projectmodels.cpp:105)
8 QtCore 0x000000010012cd66 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 710
9 libProjectExplorer_debug.dylib 0x0000000116bdf77e ProjectExplorer::NodesWatcher::filesAdded() + 38 (moc_projectnodes.cpp:427)
10 libProjectExplorer_debug.dylib 0x0000000116b4fea0 ProjectExplorer::ProjectNode::addFileNodes(QList<ProjectExplorer::FileNode*> const&, ProjectExplorer::FolderNode*) + 1104 (projectnodes.cpp:524)
11 ...4ProjectManager_debug.dylib 0x000000011de9c32b Qt4ProjectManager::Internal::Qt4ProFileNode::updateUiFiles() + 4785 (qt4nodes.cpp:1842)
12 ...4ProjectManager_debug.dylib 0x000000011de9cf1b Qt4ProjectManager::Internal::Qt4ProFileNode::buildStateChanged(ProjectExplorer::Project*) + 107 (qt4nodes.cpp:1296)
13 ...4ProjectManager_debug.dylib 0x000000011e0883dc Qt4ProjectManager::Internal::Qt4ProFileNode::qt_metacall(QMetaObject::Call, int, void**) + 124 (moc_qt4nodes.cpp:191)
14 QtCore 0x000000010012cd66 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 710
15 libProjectExplorer_debug.dylib 0x0000000116bd4ce1 ProjectExplorer::BuildManager::buildStateChanged(ProjectExplorer::Project*) + 65 (moc_buildmanager.cpp:134)
16 libProjectExplorer_debug.dylib 0x0000000116acae23 ProjectExplorer::BuildManager::decrementActiveBuildSteps(ProjectExplorer::Project*) + 167 (buildmanager.cpp:517)
17 libProjectExplorer_debug.dylib 0x0000000116accc3b ProjectExplorer::BuildManager::nextBuildQueue() + 419 (buildmanager.cpp:345)
18 libProjectExplorer_debug.dylib 0x0000000116bd4eb4 ProjectExplorer::BuildManager::qt_metacall(QMetaObject::Call, int, void**) + 464 (moc_buildmanager.cpp:116)
19 QtCore 0x000000010012cd66 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 710
20 QtCore 0x0000000100152647 QFutureWatcherBase::event(QEvent*) + 119
21 QtGui 0x00000001004737bd QApplicationPrivate::notify_helper(QObject*, QEvent*) + 189
22 QtGui 0x000000010047a11e QApplication::notify(QObject*, QEvent*) + 2094
23 QtCore 0x000000010012641c QCoreApplication::notifyInternal(QObject*, QEvent*) + 124
24 QtCore 0x0000000100213fcb QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 731
25 com.apple.CoreFoundation 0x00007fff85b5d401 __CFRunLoopDoSources0 + 1361
26 com.apple.CoreFoundation 0x00007fff85b5b5f9 __CFRunLoopRun + 873
27 com.apple.CoreFoundation 0x00007fff85b5adbf CFRunLoopRunSpecific + 575
28 com.apple.HIToolbox 0x00007fff8253a91a RunCurrentEventLoopInMode + 333
29 com.apple.HIToolbox 0x00007fff8253a71f ReceiveNextEventCommon + 310
30 com.apple.HIToolbox 0x00007fff8253a5d8 BlockUntilNextEventMatchingListInMode + 59
31 com.apple.AppKit 0x00007fff82ac4e64 _DPSNextEvent + 718
32 com.apple.AppKit 0x00007fff82ac47a9 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
33 com.apple.AppKit 0x00007fff82a8a48b -[NSApplication run] + 395
34 QtGui 0x000000010042ea94 QEventDispatcherMac::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 1588
35 QtCore 0x0000000100212934 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 68
36 QtCore 0x0000000100212c54 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 180
37 QtCore 0x000000010021427c QCoreApplication::exec() + 188
38 com.nokia.qtcreator 0x000000010000b03b main + 9725 (main.cpp:356)
39 com.nokia.qtcreator 0x0000000100005260 start + 52