This has just occurred randomly and I don't know how to fix it or avoid it.

Development Character & Animation
,
1

So the program was running fine for the last few days and now I can’t assign a skeletal mesh without the engine crashing this is my log.

LoginId:9eb9f21a4590209e0105519c6ffd0343
EpicAccountId:92b8cddf5674487db77e92eb5d29f75c

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000008b300000000

UnrealEditor_Core!mi_heap_malloc_zero_aligned_at() [D:\build++UE5\Sync\Engine\Source\ThirdParty\mimalloc\src\alloc-aligned.c:35]
UnrealEditor_Core!mi_malloc_aligned() [D:\build++UE5\Sync\Engine\Source\ThirdParty\mimalloc\src\alloc-aligned.c:97]
UnrealEditor_Core!FMallocMimalloc::Malloc() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\HAL\MallocMimalloc.cpp:64]
UnrealEditor_Core!FMemory::Malloc() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\HAL\FMemory.inl:30]
UnrealEditor_Core!`anonymous namespace’::FICUOverrides::Malloc() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Internationalization\ICUInternationalization.cpp:55]
UnrealEditor_Core!icu_64::RegexPattern::matcher()
UnrealEditor_Core!FICURegexManager::CreateRegexMatcher() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Internationalization\ICURegex.cpp:143]
UnrealEditor_Core!FRegexMatcherImplementation::FRegexMatcherImplementation() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Internationalization\ICURegex.cpp:52]
UnrealEditor_Core!FRegexMatcher::FRegexMatcher() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Internationalization\ICURegex.cpp:175]
UnrealEditor_MessageLog!SMessageLogMessageListRow::CreateMessage() [D:\build++UE5\Sync\Engine\Source\Developer\MessageLog\Private\UserInterface\SMessageLogMessageListRow.cpp:263]
UnrealEditor_MessageLog!SMessageLogMessageListRow::GenerateWidget() [D:\build++UE5\Sync\Engine\Source\Developer\MessageLog\Private\UserInterface\SMessageLogMessageListRow.cpp:58]
UnrealEditor_MessageLog!SMessageLogMessageListRow::Construct() [D:\build++UE5\Sync\Engine\Source\Developer\MessageLog\Private\UserInterface\SMessageLogMessageListRow.cpp:36]
UnrealEditor_MessageLog!SMessageLogListing::MakeMessageLogListItemWidget() [D:\build++UE5\Sync\Engine\Source\Developer\MessageLog\Private\UserInterface\SMessageLogListing.cpp:289]
UnrealEditor_MessageLog!TBaseSPMethodDelegateInstance<0,SMessageLogListing,1,TSharedRef<ITableRow,1> __cdecl(TSharedRef<FTokenizedMessage,1>,TSharedRef<STableViewBase,1> const &),FDefaultDelegateUserPolicy>::Execute() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:290]
UnrealEditor_MessageLog!SListView<TSharedRef<FTokenizedMessage,1> >::GenerateNewWidget() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views\SListView.h:1365]
UnrealEditor_MessageLog!SListView<TSharedRef<FTokenizedMessage,1> >::GenerateWidgetForItem() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views\SListView.h:1316]
UnrealEditor_MessageLog!SListView<TSharedRef<FTokenizedMessage,1> >::ReGenerateItems() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views\SListView.h:1216]
UnrealEditor_Slate!STableViewBase::Tick() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Views\STableViewBase.cpp:273]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1436]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SOverlay::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_Slate!SScrollBox::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SScrollBox.cpp:1090]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_Slate!SBorder::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_Slate!SBorder::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_Slate!SSplitter::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SSplitter.cpp:254]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_Slate!SBorder::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_Slate!SBorder::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SOverlay::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_Slate!SSplitter::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SSplitter.cpp:254]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SOverlay::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SPanel::PaintArrangedChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
UnrealEditor_SlateCore!SPanel::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SOverlay::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SCompoundWidget::OnPaint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
UnrealEditor_SlateCore!SWidget::Paint() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
UnrealEditor_SlateCore!SWindow::PaintSlowPath() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWindow.cpp:2073]
UnrealEditor_SlateCore!FSlateInvalidationRoot::PaintInvalidationRoot() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\FastUpdate\SlateInvalidationRoot.cpp:399]
UnrealEditor_SlateCore!SWindow::PaintWindow() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWindow.cpp:2105]
UnrealEditor_Slate!FSlateApplication::DrawWindowAndChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1106]
UnrealEditor_Slate!FSlateApplication::DrawWindowAndChildren() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1158]
UnrealEditor_Slate!FSlateApplication::PrivateDrawWindows() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1338]
UnrealEditor_Slate!FSlateApplication::DrawWindows() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1060]
UnrealEditor_Slate!FSlateApplication::TickAndDrawWidgets() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1625]
UnrealEditor_Slate!FSlateApplication::Tick() [D:\build++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1482]
UnrealEditor!FEngineLoop::Tick() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5325]
UnrealEditor!GuardedMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:183]
UnrealEditor!GuardedMainWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:147]
UnrealEditor!LaunchWindowsStartup() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:283]
UnrealEditor!WinMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:330]
UnrealEditor!__scrt_common_main_seh() [d:\a01_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

2

Same, did you find a solution?