Hi Scott,
An RPC error indicates Windows is not able to communicate with a device properly. Check that there is a default printer on the server and test it. See if any other program can print using it. Then check to make sure that, when logging into Adagio Payables on the server, the File>Workstation Options don't have printers set up that are not available or don't work from the server.
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Dan Desautels
DezTek Solutions Inc.
Thunder Bay, ON