>>>If I were to upgrade an application from VFP 6.0 to VFP 8.0, what are the problems I am likely to face ?
>>I'm sure some people can post a few tips on what to look for when upgrading to VFP 8.0, but nothing to cause
>>significant concern or effort.
>
>With the possible exception of the new behavior of GROUP BY/HAVING/UNION, but the SET ENGINEBEHAVIOR 70 command will fix it so you don't need to worry about the changes, if you don't have time to recode your SQL statements properly.

One thing that bit me along the way was having a hwnd property on some forms in 6.0 and trying to assign it a value. In 7.0 and 8.0 the property isn't a problem, but it is read-only.