[CrashReport] UE4Editor_MediaAssets!UMediaPlayer::GetPlaylistRef() [mediaplayer.h:890]

  880       	/**
  881       	 * Get the current play list.
  882       	 *
  883       	 * @return The play list.
  884       	 * @see GetPlaylistIndex, GetPlaylist
  885       	 */
  886       	UMediaPlaylist& GetPlaylistRef() const
  887       	{
  888       		check(Playlist != nullptr);
  889 ***** 		return *Playlist;
  890       	}

Assertion failed: Playlist != nullptr [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\MediaAssets\Public\MediaPlayer.h] [Line: 889]

UE4Editor_MediaAssets!UMediaPlayer::GetPlaylistRef() [mediaplayer.h:890]
UE4Editor_MediaPlayerEditor!SMediaPlayerEditorPlaylist::ReloadMediaSourceList() [smediaplayereditorplaylist.cpp:249]
UE4Editor_MediaPlayerEditor!SMediaPlayerEditorPlaylist::Construct() [smediaplayereditorplaylist.cpp:239]
UE4Editor_MediaPlayerEditor!FMediaPlayerEditorToolkit::HandleTabManagerSpawnTab() [mediaplayereditortoolkit.cpp:421]
UE4Editor_MediaPlayerEditor!TBaseSPMethodDelegateInstance<0,FMediaPlayerEditorToolkit,0,TSharedRef<SDockTab,0> __cdecl() [delegateinstancesimpl.h:269]
UE4Editor_Slate!FTabManager::SpawnTab() [tabmanager.cpp:1414]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [tabmanager.cpp:1273]
UE4Editor_Slate!FTabManager::RestoreSplitterContent() [tabmanager.cpp:1388]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [tabmanager.cpp:1366]
UE4Editor_Slate!FTabManager::RestoreSplitterContent() [tabmanager.cpp:1388]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [tabmanager.cpp:1357]
UE4Editor_Slate!FTabManager::RestoreArea() [tabmanager.cpp:1249]
UE4Editor_Slate!FTabManager::RestoreFrom() [tabmanager.cpp:808]
UE4Editor_UnrealEd!SStandaloneAssetEditorToolkitHost::RestoreFromLayout() [sstandaloneasseteditortoolkithost.cpp:126]
UE4Editor_UnrealEd!SStandaloneAssetEditorToolkitHost::SetupInitialContent() [sstandaloneasseteditortoolkithost.cpp:112]
UE4Editor_UnrealEd!FAssetEditorToolkit::InitAssetEditor() [asseteditortoolkit.cpp:261]
UE4Editor_UnrealEd!FAssetEditorToolkit::InitAssetEditor() [asseteditortoolkit.cpp:53]
UE4Editor_MediaPlayerEditor!FMediaPlayerEditorToolkit::Initialize() [mediaplayereditortoolkit.cpp:147]
UE4Editor_MediaPlayerEditor!FMediaPlayerActions::OpenAssetEditor() [mediaplayeractions.cpp:72]
UE4Editor_UnrealEd!FAssetEditorManager::OpenEditorForAsset() [asseteditormanager.cpp:377]
UE4Editor_MediaPlayerEditor!FAssetTypeActions_Base::AssetsActivated() [assettypeactions_base.h:57]
UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [scontentbrowser.cpp:2085]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl() [delegateinstancesimpl.h:345]
UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() [sassetview.cpp:4046]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl() [delegateinstancesimpl.h:345]
UE4Editor_ContentBrowser!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0> >::ExecuteIfBound() [delegatesignatureimpl.inl:624]
UE4Editor_ContentBrowser!SListView<TSharedPtr<FAssetViewItem,0> >::Private_OnItemDoubleClicked() [slistview.h:815]
UE4Editor_ContentBrowser!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonDoubleClick() [stablerow.h:310]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_eeb33fd1b480e3cad58a1531d90d2e14> >() [slateapplication.cpp:268]
UE4Editor_Slate!FSlateApplication::RoutePointerDoubleClickEvent() [slateapplication.cpp:5922]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() [slateapplication.cpp:5909]
UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() [slateapplication.cpp:5885]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1740]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2182]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:895]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [windowsapplication.cpp:732]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [windowsplatformapplicationmisc.cpp:129]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3417]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:144]
UE4Editor!WinMain() [launchwindows.cpp:223]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:283]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()