ue4 UMG视频播放问题

在4.18.3中用UI播放视频，经常会失败，有时编辑器直接崩掉。谁知道这是为哈：[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000B316ED23 UE4Editor-WmfMedia.dll!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000B31756F5 UE4Editor-WmfMedia.dll!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000B31979F6 UE4Editor-WmfMedia.dll!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000B34B162B UE4Editor-MediaUtils.dll!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000D51E3E3E UE4Editor-Media.dll!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x000000008D5D5BA3 UE4Editor.exe!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x000000008D5E5430 UE4Editor.exe!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x000000008D5E54AA UE4Editor.exe!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x000000008D5F2379 UE4Editor.exe!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x000000008D5F3D57 UE4Editor.exe!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000FD2A1FE4 KERNEL32.DLL!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000FD91EF91 ntdll.dll!UnknownFunction []
[2018.04.19-05.12.42:483][255]LogWindows: Error: [Callstack] 0x00000000FD91EF91 ntdll.dll!UnknownFunction []