go to post Mark Smith · Apr 27, 2018 Hi,If you are getting "ERROR #5005: Cannot open file 'C:\...' when trying to use EnsLib.File.PassthroughOperation via a router, ensure you have a 'Work Path' set on the Service that connects to the router.This is because there are 2 components trying to access the file, so it needs to use a temporary location.Hope that helpsMark