Access 2002/2003 VBA works but 97 doesn't

[JasonA]

I have added simple lines

If counter = countfrom then
msgbox "Add log"
end if

Access 97 database bombs out as soon as it is opened or this code is ran.

If I convert database to 2000, then to 2002/2003 then add this code the
database runs fine under Access 2003. Why?

Thanks,
J.

 

[JasonA]

Note:

Also if I create a new Access 97 db with this code it works.