# Editor crash when playing level with the use of OpenCV plugin **URL:** \ **Category:** Programming & Scripting\ **Tags:** unreal-engine\ **Created:** [October 7, 2016, 2:45pm UTC](https://forums.unrealengine.com/t/editor-crash-when-playing-level-with-the-use-of-opencv-plugin/372725 "2016-10-07T14:45:57Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Airat](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Airat](https://forums.unrealengine.com/u/Airat)\ **Post date:** [October 7, 2016, 2:45pm UTC](https://forums.unrealengine.com/t/editor-crash-when-playing-level-with-the-use-of-opencv-plugin/372725/1 "2016-10-07T14:45:57Z")
Please, help! I plugged in the plug OpenCV UE4.9 on this instruction > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official... but when it comes to the face detection method, then the editor of the crash face\_cascade-\> detectMultiScale (frame\_gray, faces, 1.1, 3, 0 | CASCADE\_SCALE\_IMAGE, Size (30, 30)); I can not understand what went wrong here the log: [DropMeFiles – free one-click file sharing service](http://dropmefiles.com/LFif3) ---
**Author:** ![valake](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@valake](https://forums.unrealengine.com/u/valake)\ **Post date:** [October 31, 2016, 2:37pm UTC](https://forums.unrealengine.com/t/editor-crash-when-playing-level-with-the-use-of-opencv-plugin/372725/2 "2016-10-31T14:37:13Z")
Hello Airat, I have the same problem with other filter functions like inRange() or cvtColor(). Maybe solved you your issue?