# Default Property warning at startup

**URL:** <https://forums.unrealengine.com/t/default-property-warning-at-startup/328151>\
**Category:** Getting Started & Setup\
**Tags:** startup, error, warning, unreal-engine, question\
**Created:** [August 9, 2015, 9:22pm UTC](https://forums.unrealengine.com/t/default-property-warning-at-startup/328151 "2015-08-09T21:22:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jeremycouillard](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@jeremycouillard](https://forums.unrealengine.com/u/jeremycouillard)\
**Post date:** [August 9, 2015, 9:22pm UTC](https://forums.unrealengine.com/t/default-property-warning-at-startup/328151/1 "2015-08-09T21:22:39Z")

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When I start up my project at 45% I get this error:

Default Property warnings and errors:  
Error: CDO Constructor (ThumbnailManager): Failed to find  
/Engine/MapTemplates/Sky/DaylightAmbientCubemap

Before the error I was deleting some of the default stuff to make my build smaller. The level loads and works fine but I would like to get rid of this error as I would assume there will be problems when I build it. Also I restored an old version with all the starter content in it again and am still getting this error. I trook the ambientcubemap from some other saved game and put it in this one and still got the error. I deleted all the content in my saved folder…that really messed things up. I restored it…still getting the error. Any ideas?  
Thanks!

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**Author:** ![jeremycouillard](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@jeremycouillard](https://forums.unrealengine.com/u/jeremycouillard)\
**Post date:** [August 10, 2015, 1:33pm UTC](https://forums.unrealengine.com/t/default-property-warning-at-startup/328151/2 "2015-08-10T13:33:44Z")

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Fixed this by right clicking on 4.8.3 version in game launcher and doing “verify.” Thanks.

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**Author:** ![NUKETheWay](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/nuketheway/32/489447_2.png) [@NUKETheWay](https://forums.unrealengine.com/u/NUKETheWay)\
**Post date:** [August 21, 2021, 2:23pm UTC](https://forums.unrealengine.com/t/default-property-warning-at-startup/328151/3 "2021-08-21T14:23:31Z")

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what game launcher? I am getting this in android after removing engine content. Although game works fine. But I can’t release it like this.