Crash while opening project

I was opening a second project while there was a project already open. The second project was roughly a copy of the first project (I don't know if this plays a role).

Opening took very long, so I went away, when I woke up the computer. Creator had crashed. //EDIT: Looking at the Time since wake below: This did not play a role - the application was already crashing before the computer went to sleep//

Process: Qt Creator [35133]
Path: /Users/USER/*/Qt Creator.app/Contents/MacOS/Qt Creator
Identifier: org.qt-project.qtcreator
Version: 4.6 (4.6.0)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Qt Creator [35133]
User ID: 501

Date/Time: 2018-04-22 23:31:21.948 +0200
OS Version: Mac OS X 10.13.4 (17E199)
Report Version: 12
Anonymous UUID: 7DF61346-B6F8-908A-0655-2004B20977DE

Sleep/Wake UUID: 072BE14E-E6BE-4D0A-AC34-47A5DE1426A0

Time Awake Since Boot: 170000 seconds
Time Since Wake: 5400 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000100000049
Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]

VM Regions Near 0x100000049:
-->
__TEXT 00000001054a7000-00000001054ba000 [ 76K] r-x/rwx SM=COW  [/Users/ni/Qt-5-9-2/Qt Creator.app/Contents/MacOS/Qt Creator]

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libProjectExplorer.dylib 0x000000010b9c6149 ProjectExplorer::Internal::FlatModel::flags(QModelIndex const&) const + 57
1 org.qt-project.QtCore 0x00000001063c6bd2 0x10621d000 + 1743826
2 org.qt-project.QtCore 0x00000001063c711b QItemSelection::indexes() const + 91
3 org.qt-project.QtWidgets 0x0000000105a3b295 QTreeView::selectionChanged(QItemSelection const&, QItemSelection const&) + 485
4 org.qt-project.QtCore 0x000000010643e1da QMetaObject::activate(QObject*, int, int, void**) + 2954
5 org.qt-project.QtCore 0x00000001063cc410 QItemSelectionModel::emitSelectionChanged(QItemSelection const&, QItemSelection const&) + 1232
6 org.qt-project.QtCore 0x00000001063cbd38 QItemSelectionModel::select(QItemSelection const&, QFlags<QItemSelectionModel::SelectionFlag>) + 728
7 org.qt-project.QtCore 0x00000001063cba2b QItemSelectionModel::select(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) + 59
8 org.qt-project.QtCore 0x00000001063cc815 QItemSelectionModel::setCurrentIndex(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) + 197
9 org.qt-project.QtWidgets 0x00000001059c39eb QAbstractItemView::setCurrentIndex(QModelIndex const&) + 155
10 org.qt-project.QtWidgets 0x00000001059ce17c QAbstractItemView::rowsAboutToBeRemoved(QModelIndex const&, int, int) + 1164
11 org.qt-project.QtWidgets 0x0000000105a3823f QTreeView::rowsAboutToBeRemoved(QModelIndex const&, int, int) + 15
12 org.qt-project.QtCore 0x000000010643e1da QMetaObject::activate(QObject*, int, int, void**) + 2954
13 org.qt-project.QtCore 0x00000001063bc1b8 QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) + 392
14 libUtils.4.6.0.dylib 0x00000001055e5ba1 Utils::TreeItem::removeChildren() + 81
15 libProjectExplorer.dylib 0x000000010b9c644d ProjectExplorer::Internal::FlatModel::addOrRebuildProjectModel(ProjectExplorer::Project*) + 61
16 org.qt-project.QtCore 0x000000010643df7b QMetaObject::activate(QObject*, int, int, void**) + 2347
17 libProjectExplorer.dylib 0x000000010ba82e30 ProjectExplorer::ProjectTree::subtreeChanged(ProjectExplorer::FolderNode*) + 64
18 libProjectExplorer.dylib 0x000000010b969131 ProjectExplorer::Project::handleSubTreeChanged(ProjectExplorer::FolderNode*) + 593
19 libProjectExplorer.dylib 0x000000010b968ebb ProjectExplorer::Project::setRootProjectNode(ProjectExplorer::ProjectNode*) + 267
20 libQmakeProjectManager.dylib 0x000000010e0cf814 QmakeProjectManager::QmakeProject::decrementPendingEvaluateFutures() + 84
21 org.qt-project.QtCore 0x000000010643df7b QMetaObject::activate(QObject*, int, int, void**) + 2347
22 org.qt-project.QtCore 0x0000000106240a68 QFutureWatcherBase::event(QEvent*) + 216
23 org.qt-project.QtWidgets 0x0000000105760752 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 306
24 org.qt-project.QtWidgets 0x0000000105761a6f QApplication::notify(QObject*, QEvent*) + 383
25 org.qt-project.QtCore 0x000000010640cf7f QCoreApplication::notifyInternal2(QObject*, QEvent*) + 159
26 org.qt-project.QtCore 0x000000010640e152 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 850
27 libqcocoa.dylib 0x0000000108771cfe 0x108748000 + 171262
28 libqcocoa.dylib 0x00000001087725b1 0x108748000 + 173489
29 com.apple.CoreFoundation 0x00007fff35b16d81 _CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION_ + 17
30 com.apple.CoreFoundation 0x00007fff35bce65c __CFRunLoopDoSource0 + 108
31 com.apple.CoreFoundation 0x00007fff35af9d30 __CFRunLoopDoSources0 + 208
32 com.apple.CoreFoundation 0x00007fff35af91ad __CFRunLoopRun + 1293
33 com.apple.CoreFoundation 0x00007fff35af8a07 CFRunLoopRunSpecific + 487
34 com.apple.HIToolbox 0x00007fff34dd6d96 RunCurrentEventLoopInMode + 286
35 com.apple.HIToolbox 0x00007fff34dd6b06 ReceiveNextEventCommon + 613
36 com.apple.HIToolbox 0x00007fff34dd6884 _BlockUntilNextEventMatchingListInModeWithFilter + 64
37 com.apple.AppKit 0x00007fff33089a73 _DPSNextEvent + 2085
38 com.apple.AppKit 0x00007fff3381fe34 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044
39 com.apple.AppKit 0x00007fff3307e885 -[NSApplication run] + 764
40 libqcocoa.dylib 0x00000001087713ad 0x108748000 + 168877
41 org.qt-project.QtCore 0x0000000106408a72 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 418
42 org.qt-project.QtCore 0x000000010640d692 QCoreApplication::exec() + 402
43 org.qt-project.qtcreator 0x00000001054b3444 main + 16484
44 libdyld.dylib 0x00007fff5deb0015 start + 1