Error when I try to replace a save file

[SamitoB]

I double click on Save0002 and try to overwrite it but it comes up with a popup and this error:

Error

An exception was thrown (press Ctrl+C to copy):

System.UnauthorizedAccessException: Access to the path is denied.

at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

at System.IO.FileStream.WriteCore(Byte[] buffer, Int32 offset, Int32 count)

at System.IO.FileStream.FlushWrite(Boolean calledFromFinalizer)

at System.IO.FileStream.Dispose(Boolean disposing)

at System.IO.Stream.Close()

at Gibbed.Borderlands2.SaveEdit.ShellViewModel.<>c__DisplayClass59_0.b__0()

at Caliburn.Micro.Contrib.Results.DelegateResult.Execute(ActionExecutionContext context)

OK

Does anyone know how to fix this?