Message: tblMain: Error 6610: The Advantage Database Server did not respond to a database request in a timely manner. A communications problem has occurred.
This looks like a timeout, perhaps due to antivirus interference:
The most common cause of a 6610 error is a firewall issue. Make sure that you allow TCP/IP traffic in and out on port 7868. You may have to configure firewalls at both the client and server. You could also take a look at this Tech-Tip about connecting to Advantage over a WAN.
If you are not already using TCP/IP make the switch indicated in the KBA http://devzone.advantagedatabase.com/dz/content.aspx?Key=17&RefNo=080423-2015 (http://devzone.advantagedatabase.com/dz/content.aspx?Key=17&RefNo=080423-2015)
If you are using UDP communication your packets can be dropped and UDP will not care. TCP/IP is usually buffered and provides more reliability.
Some other potential solutions: