Cluster light build

Hello,sorry if is wrong section.
I’ve a problem when try to do a cluster, when try to build light only the the coordinator work, the others machine do it nothing, and the swarm’s log are full of:
14:59:34: [PushChannel] Pushing the channel has failed!
14:59:34: [PushChannel] Exception message: System.IO.DirectoryNotFoundException: Impossibile trovare una parte del percorso ‘C:\Users\My-Username\AppData\Local\UnrealEngine\4.1\Saved\Swarm\Win64\UnrealLightmass.pdb’.
in System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
in 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)
in System.IO.FileStream…ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
in System.IO.File.InternalReadAllBytes(String path, Boolean checkHost)
in Agent.Agent.PushChannel(RemoteConnection Remote, String ChannelName, AgentGuid JobGuid)

Coordinator:
CPU: I7 3770k
Ram: 16gb ddr3 1866 MHZ,
OS: Windows 8.1 64 Bit Enterprise

Agent 1 (for test)
Inter core i5 socket 775
OS: Windows 8.1 64 Bit Enterprise

Thanks in advance