An error has occurred in the scanner driver. Abort scanning."
After couple years of trouble free wireless use the scanner function ceased working: "An error has occurred in the scanner driver. abort scanning."
After several weeks and with no soultion/recommendation found on any of the internet help sites, eventually determined that the problem was McAfee firewall setting blocking the MP Navigator EX 2.0 from connecting "in" wirelessly to the computer.
Went into McAfee firewall settings and changed setting to "all" for MP Navigator.
After converting to windows 7 64 bit my MP Navigator quit working and gave the message "insufficient memory." After reinstalling the software I kept getting the same message. After many hours of trying different things, the following link lead me to a solution to the problem.