Hi,
I believe you are referring specifically to pressing F6 in the Customer code field on the New Order window when creating a new order from the Orders/Invoices/Credit Notes window.
I've tested this using that release and a few different datasets, following the search through to selecting a customer and am not receiving that error at any point. Nor, do I have other reports of this behaviour.
If you open sample data located at yourserverdrive:\Softrak\OEWIN\Samdata using extension SAM and do the same things, do you receive the same error using F6 in that Customer fields?
I suspect that something did not install properly when you installed the upgrades. Were there any error or warning messages received during the installs?
If you receive the same error using sample data, you will need to have everyone out of Adagio and do the install again.
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Regards,
Softrak Tech Support