Timothy,
>We are converting a 2.6 app to VFP 6.0 and I've noticed a change in how FoxPro handles included tables. In 2.6, if you included a table in a project file, once the table was opened, it could be included in any select statement. However, this ceased being the case in VFP. Now, the select statement seems to need the original file, even though it is open, browseable, etc.
>create table testtable (testfield c(5))
Perhaps you did the above command in 2.6, which created a table with 8-character name?: testtabl.dbf
Have you looked to see if "testtable.dbf" actually exists on disk?