# Lihtmass result error **URL:** \ **Category:** World Creation\ **Tags:** lighting-error, lighting-build, unreal-engine, question\ **Created:** [March 26, 2020, 6:30pm UTC](https://forums.unrealengine.com/t/lihtmass-result-error/462915 "2020-03-26T18:30:38Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![kocurel9009](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kocurel9009](https://forums.unrealengine.com/u/kocurel9009)\ **Post date:** [March 26, 2020, 6:30pm UTC](https://forums.unrealengine.com/t/lihtmass-result-error/462915/1 "2020-03-26T18:30:38Z")
Hey guys, I’ve encountered a problem I can;t resolve by myself and need some help. Does anyone know what to do with it? I’ve had some instanced foliage but already deleted it. Didn’t help, I don;t even know where to start with it. ![298511-2020-03-26-19-28-22.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/0/3/4/034361d7527ed95b7956f7800e80ba318e340095.jpeg) ---
**Author:** ![Blackforcedragon](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/blackforcedragon/32/1010299_2.png) [@Blackforcedragon](https://forums.unrealengine.com/u/Blackforcedragon)\ **Post date:** [March 26, 2020, 10:28pm UTC](https://forums.unrealengine.com/t/lihtmass-result-error/462915/2 "2020-03-26T22:28:47Z")
Do you code in C++ or Blueprints? ---
**Author:** ![presto423](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@presto423](https://forums.unrealengine.com/u/presto423)\ **Post date:** [March 28, 2020, 4:07pm UTC](https://forums.unrealengine.com/t/lihtmass-result-error/462915/3 "2020-03-28T16:07:21Z")
So the foliage was deleted, and now the engine throws the error even though those instances are deleted? Might need to restart engine, or try refreshing the editor viewport…