If there are no OEF### data files in your data directory, I would not expect the first user opening Adagio OrderEntry to get an error using the SmartFinder.
Perhaps try this. When nobody is in Adagio, rename not only any OEF### data files, but also the OEFCTL'I and OEFCTL'R data files - these are the SmartFinder control files. Also rename the OEMFCT'I and OEMFCT'R data files if they exists - these are the SmartFinder control files if you have ever performed a SmartFinder search using 2 or more criteria.
When you next open OrderEntry, the OEFCTL files will be recreated. And the next time you perform a search with 2 or more criteria, the OEMFCT files will be recreated. If you continue to get the same errors after having done this, then I believe there is something in the workstation or network environment that is the ultimate cause of the problem.
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Regards,
Softrak Tech Support