UE4 4.25 CRASHING (urgent)

Development Getting Started & Setup
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1

my unreal editor keeps crashing every time i go to bake the scene with this error, please can someone help find a solution

Unhandled Exception: 0xe0434352

KERNELBASE
clr
clr
System_ni
System_Runtime_Remoting_ni
System_ni
mscorlib_ni
mscorlib_ni
mscorlib_ni
System_ni
System_ni
System_ni
mscorlib_ni
clr
clr
clr
clr
clr
clr
clr
clr
clr
clr
clr
clr
kernel32
ntdll

2

swarm is now giving this error:

09:00:46: [Interface:OpenChannel] Error: System.IO.IOException: The process cannot access the file ‘C:\Users(username)\AppData\Local\UnrealEngine\4.25\Saved\Swarm\SwarmCache\AgentStagingArea\v1.C401EA93502AF459DEFCC84349DA1D90F8CAF398.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 D:\Build++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Editor\SwarmInterface\DotNET\SwarmInterface.cs:line 1604

3

Will it crash in an empty project as well?

4

Try to restart your computer.