# UV's are overlapping, Second UV channel created and it still gives an error

**URL:** <https://forums.unrealengine.com/t/uvs-are-overlapping-second-uv-channel-created-and-it-still-gives-an-error/403789>\
**Category:** Rendering\
**Tags:** overlapping-uvs, uv, overlap, unreal-engine, Lighting, UE4, question\
**Created:** [September 5, 2017, 12:36pm UTC](https://forums.unrealengine.com/t/uvs-are-overlapping-second-uv-channel-created-and-it-still-gives-an-error/403789 "2017-09-05T12:36:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anonymous\_user\_821d0a4d](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_821d0a4d](https://forums.unrealengine.com/u/anonymous_user_821d0a4d)\
**Post date:** [September 5, 2017, 12:36pm UTC](https://forums.unrealengine.com/t/uvs-are-overlapping-second-uv-channel-created-and-it-still-gives-an-error/403789/1 "2017-09-05T12:36:16Z")

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Hey!  
I’ve imported several models from cinema4d. When baking the lights unreal tells me the the UV’s are overlapping. So I made a second UV channel inside Unreal, did an auto unwrap on channel 1 and I selected channel 1 as the lighting channel. And still. Nothing changes. Does anyone have an idea what might be going wrong?

 ![212321-screen-shot-2017-09-05-at-143107.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/9/3/8934282e292becc2604585a7521398053193924d.png)

This is how I set my lighting settings for the mesh.

 ![212324-screen-shot-2017-09-05-at-143434.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/7/a/87aba8cbadffbe1cc4afae7c30718f5cddcf81e2.jpeg)

And this is my UV map on channel 1.

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**Author:** ![anonymous\_user\_8312749a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_8312749a](https://forums.unrealengine.com/u/anonymous_user_8312749a)\
**Post date:** [September 5, 2017, 8:02pm UTC](https://forums.unrealengine.com/t/uvs-are-overlapping-second-uv-channel-created-and-it-still-gives-an-error/403789/2 "2017-09-05T20:02:55Z")

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The light map generator is far from perfect and I’ve run I to issues my self. You’re going to need to manually setup the light map uvs or at least provide a better u wrap for it to work from. It has particular issues with mass overlapping.

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**Author:** ![anonymous\_user\_821d0a4d](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_821d0a4d](https://forums.unrealengine.com/u/anonymous_user_821d0a4d)\
**Post date:** [September 6, 2017, 7:41am UTC](https://forums.unrealengine.com/t/uvs-are-overlapping-second-uv-channel-created-and-it-still-gives-an-error/403789/3 "2017-09-06T07:41:16Z")

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Thanks for your suggestion. I’m going back to cinema4d to change my assets. I already was afraid there was no other option.