Dss0 im also having the same problem and i tried deleting it and then re downloading it and it still did not work also its not letting me delete plutonium.new.exe then it shows this
Crash ID: b03d66c2140c4d3493298f0c73edb63c
Plutonium.Updater.Core.Models.UpdateException: Failed to update file bin/plutonium-launcher-win32.exe ---> System.IO.IOException: The process cannot access the file 'C:\Users\sorry cant show this\AppData\Local\Plutonium\bin\plutonium-launcher-win32.exe' 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, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.File.InternalWriteAllBytes(String path, Byte[] bytes, Boolean checkHost)
at Plutonium.Updater.Core.Updater.<Run>d__23.MoveNext()
--- End of inner exception stack trace ---
at Plutonium.Updater.Core.Updater.<Run>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Plutonium.Updater.App.Windows.UpdateWindow.<UpdateWindow_Loaded>d__6.MoveNext()