Thanks Jane,
Just to reiterate, the app is an ordinary Clarion app with Self Service added to it.
When its running as a Service its Credentials appear to be correct as .\svc.timepeace and not LOCALHOST
In the properties the address path is correct and "log in as local system "is unticked with "this account" selected, requiring a password.
The CSV file is created daily, is not printed , nor is it sent to Excel , rather it is copied into another folder on the host PC., date named, waiting to be picked up by the user.
Please Note that the application behaves perfectly and creates and exports the file as anticipated WHEN it is running on the desktop from a shortcut...
Its only when running as a Service that it doesn't respond.
I remain suspicious ( without foundation) of the code Routine from within the Timer embed, that runs the creation of the file , WHEN it is running as a Service.
Cheers
Richard