Physics Asset Editor crash 4.18.3

Hello,
MY whole engine crashes ones i try to open any physics asset. I’m not sure whats happening here but it seems to search for a font or something like it and can’t find it? I Hope u have any Idea cause i searched for hour’s now and can’t seem to fix this. Thanks for Help! Here is the Error, log is under Attachments link text

Assertion failed: PhysicsAssetEditorFont [File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Editor\PhysicsAssetEditor\Private\PhysicsAssetEditorEditMode.cpp] [Line: 42]

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:414]
UE4Editor_PhysicsAssetEditor!FPhysicsAssetEditorEditMode::FPhysicsAssetEditorEditMode() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\physicsasseteditor\private\physicsasseteditoreditmode.cpp:42]
UE4Editor_PhysicsAssetEditor!::operator()() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\public\editormoderegistry.h:166]
UE4Editor_PhysicsAssetEditor!::() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\public\editormoderegistry.h:167]
UE4Editor_PhysicsAssetEditor!UE4Tuple_Private::TTupleImpl >::ApplyAfter (__cdecl*const & __ptr64)(void)>() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\templates\tuple.h:497]
UE4Editor_PhysicsAssetEditor!TBaseStaticDelegateInstance __cdecl(void)>::Execute() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:958]
UE4Editor_PhysicsAssetEditor!TBaseDelegate >::Execute() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:537]
UE4Editor_PhysicsAssetEditor!FEditorModeFactory::CreateMode() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\public\editormoderegistry.h:111]
UE4Editor_UnrealEd!FEditorModeRegistry::CreateMode() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\editormoderegistry.cpp:117]
UE4Editor_UnrealEd!FEditorModeTools::ActivateMode() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\editormodemanager.cpp:397]
UE4Editor_PhysicsAssetEditor!FPhysicsAssetEditor::InitPhysicsAssetEditor() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\physicsasseteditor\private\physicsasseteditor.cpp:171]
UE4Editor_PhysicsAssetEditor!FPhysicsAssetEditorModule::CreatePhysicsAssetEditor() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\physicsasseteditor\private\physicsasseteditormodule.cpp:58]
UE4Editor_AssetTools!FAssetTypeActions_PhysicsAsset::OpenAssetEditor() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\assettools\private\assettypeactions\assettypeactions_physicsasset.cpp:39]
UE4Editor_UnrealEd!FAssetEditorManager::OpenEditorForAsset() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\toolkits\asseteditormanager.cpp:361]
UE4Editor_AssetTools!FAssetTypeActions_Base::AssetsActivated() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\assettools\public\assettypeactions_base.h:50]
UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:1942]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper __cdecl(TArray const & __ptr64,enum EAssetTypeActivationMethod::Type)>::Execute() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(TArray const & __ptr64,enum EAssetTypeActivationMethod::Type)>::ExecuteIfSafe() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:434]
UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\contentbrowser\private\sassetview.cpp:3904]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper __cdecl(TSharedPtr)>::Execute() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr)>::ExecuteIfSafe() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:434]
UE4Editor_ContentBrowser!TBaseDelegate >::ExecuteIfBound() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:624]
UE4Editor_ContentBrowser!SListView >::Private_OnItemDoubleClicked() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\public\widgets\views\slistview.h:805]
UE4Editor_ContentBrowser!STableRow >::OnMouseButtonDoubleClick() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\public\widgets\views\stablerow.h:288]
UE4Editor_Slate!::operator()() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5695]
UE4Editor_Slate!FEventRouter::Route >() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:234]
UE4Editor_Slate!FSlateApplication::RoutePointerDoubleClickEvent() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5693]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5680]
UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5656]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1729]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2171]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:888]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:725]
user32
user32
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:129]
UE4Editor!FEngineLoop::Tick() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3220]
UE4Editor!GuardedMain() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll