Then you must be opening the tables in some other manner. Does this work without error for you? It does for me.

CLOSE DATABASES ALL

CREATE TABLE t1 (f1 c(1))
USE IN SELECT("t1")
CREATE TABLE t2 (f1 c(1))
USE IN SELECT("t2")
CREATE TABLE t3 (f1 c(1))
USE IN SELECT("t3")
CREATE TABLE t4 (f1 c(1))
USE IN SELECT("t4")
CREATE TABLE t5 (f1 c(1))
USE IN SELECT("t5")

CREATE DATABASE test

ADD TABLE t1
ADD TABLE t2
ADD TABLE t3
ADD TABLE t4
ADD TABLE t5

>Fred-
>
>I'm not opening the tables. The only code prior to this is creation of the database.
>
>Dan
>
>>Don't open them first. If they're not open, the ADD TABLE adds them just fine, no message or anything to cause a problem.
>>
>>>I'm opening up free tables in VFP 9.0 that were created in VFP 6.0
>>>and adding them to a database.
>>>
>>>Below is the code.
>>>The commented code, keeps the program from stopping but is not
>>>as clean as I would like.
>>>
>>>

>>>lnTotDbfs = ADIR( laDbfs, "*.dbf" )
>>>FOR lnCurDbf = 1 TO lnTotDbfs
>>>  lcDbf = UPPER( ALLTRIM( JUSTSTEM(laDbfs[lnCurDbf, ADIR_FILENAME]) ) )
>>>  IF NOT (lcDbf == "FOXUSE" OR lcDbf == "FOXUSER" OR lcDbf == "HASPRIMARY" )
>>>    IF NOT INDBC( lcDbf, "TABLE" )
>>>	*CLEAR TYPEAHEAD
>>>	*KEYBOARD 'Y'
>>>	ADD TABLE (lcDbf)
>>>    ENDIF
>>>  ENDIF
>>>ENDFOR
>>>

>>>
>>>>>I'm converting data from vfp6 to vfp9.
>>>>>I'm getting the following message
>>>>>"File < table > will be updated to a new file format, making it unreadable to previous versions of FoxPro. ..."
>>>>>
>>>>>Is there a way to disable this message?
>>>>
>>>>Where are you getting this message? I've never seen it.