# Kickoff swarm agent

**URL:** <https://forums.unrealengine.com/t/kickoff-swarm-agent/359017>\
**Category:** Rendering\
**Tags:** build, unreal-engine, Lighting, question\
**Created:** [May 30, 2016, 7:53am UTC](https://forums.unrealengine.com/t/kickoff-swarm-agent/359017 "2016-05-30T07:53:16Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\
**Post date:** [May 30, 2016, 7:53am UTC](https://forums.unrealengine.com/t/kickoff-swarm-agent/359017/1 "2016-05-30T07:53:16Z")

</div>

Hello.

I have a problem with the reconstruction light. It gives me the message " rebuilding lightning failed . Swarm failed to kick off ." I do not know why this happens because previously everything worked out well .

I was here

> **[Lightning Build Failed. Swarm Failed to Kick off](https://forums.unrealengine.com/questions/201327/lightning-build-failed-swarm-failed-to-kick-off.html)**
>
> I looked around the forums at other posts and could not find the right solution. This problem happened when update 4.7 came and I created a 4.7 version of the project I was working on (my project used to be in 4.6). Ever since then, I have been...

and here

> **[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 it’s not really helping.

I should add that my map is broken, because every time a window pops up that the project was saved in a newer version. This happens before few months . I working on a project to study and to defend me has been less than a month . Please help.

---

<div class="post-metadata">

**Author:** ![anonymous\_user\_6e7b421a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e7b421a](https://forums.unrealengine.com/u/anonymous_user_6e7b421a)\
**Post date:** [May 31, 2016, 2:46pm UTC](https://forums.unrealengine.com/t/kickoff-swarm-agent/359017/2 "2016-05-31T14:46:25Z")

</div>

Hello V4nder,

Try renaming your .Uproject file to get rid of the ‘project saved in newer version’ and any ‘Externally Referenced’ errors. Did you upgrade your project from a previous engine version?

Be sure you are not running out of space on your disk drive and that your have cleaned and validated your Swarm Agent.

Thank you,

---

<div class="post-metadata">

**Author:** ![V4nder](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@V4nder](https://forums.unrealengine.com/u/V4nder)\
**Post date:** [May 31, 2016, 3:05pm UTC](https://forums.unrealengine.com/t/kickoff-swarm-agent/359017/3 "2016-05-31T15:05:33Z")

</div>

Thanks for answer Andrew. Problem is now solved. I used CCleaner and repair all “registers”. .

I renamed my project before, but doesn’t help. My map is corrupted and i cant do nothing with this. So he wrote another member of STAFF.

You can upgrade there issues

> **[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...

Thanks 🙂