null error

This is related to Access 2003. In what window do you see this message? You say you get this when you boot, is it before or after your logon?

My first thought would be to check startup entries using msconfig.exe

This error "you can use the nz function to evaluate a value and return
a specified value if the evaluated value is null" occurs after logging
on to windows 98. This system has been upgraded from windows 95. The
error seems to be associated with the program Espresso Money Minder by
Management Technologies. After clicking the icon to open the program,
the administrative module displays the error, "you can use the nz
function to evaluate a value and return a specified value if the
evaluated value is null." Any suggestions? Also, this computer isn't
connected to a network at all. Just the tower, monitor and a printer.
Basic setup. I've never seen this error displayed before