I had also had this problem for a while. Since I upgraded to the latest version it didn't come back. However, I was always able to connect to my EZB so I don't think this has anything to do with it.

thanks i'll re-download ez builer again

Have you tried updating your .NET Framework?

Windows sometimes gets confused - a computer reboot is always a good start ... Second, make sure you're running the most current ARC version.