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.