Can not build lights in level after updating to 4.11 swarm failed to kick off

I’ve tried many of the solutions that I can find. I’ve deleted the intermediate/saved directory, deleted the swarmcache folder and cleared/validated in swarm. I’ve tried copying the assets from this level except the lights into a new level. Please help!

4:47:06 PM: [Interface:TryOpenConnection] Local connection established
4:47:06 PM: [Job] Accepted Job B7C950B2-4D3BB55A-798F6B9A-615EADB1
4:47:09 PM: [Interface:OpenChannel] Error: System.IO.IOException: The process cannot access the file ‘C:\Users\imsop\AppData\Local\UnrealEngine\4.11\Saved\Swarm\SwarmCache\AgentStagingArea\8487AD2E5DBA413C81373D29B2915895.3449FD334D2B4FE6BBA80CBBCFAE9FD2.mtrlgz’ because it is being used by another process.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream…ctor(String path, FileMode mode, FileAccess access, FileShare share)
at NSwarm.FSwarmInterface.OpenChannel(String ChannelName, EChannelFlags ChannelFlags) in i:\Perforce2\UE4-Orion\Engine\Source\Editor\SwarmInterface\DotNET\SwarmInterface.cs:line 1

Rebuild UnrealLightmass;

This isn’t a version of unreal from github? I also had another version of swarm I tried and it did not work. It only seems to be on one map. It works with others

This isn’t a version of unreal from github? I also had another version of swarm I tried and it did not work. It only seems to be on one map. It works with others

My project is Github, and that fix worked. However, I’ve now opened another project from 4.10 and the maps are corrupt. I’m having to make new maps in 4.11…