Thanks Mike,

Would you,however,explain more detaily the use of 'form_access', for example how and when to call the method ? Sounds funny though, I got what made the error message. In Dataenvironment of the form, I set 'AutocloseTables' property .F. to shorten the time of test the form which includes one remote view. After changing the property to .T., the error message disapeared. I just guess one-to-many grid form shoudn't set the AutocloseTables property false and if you can spare me a time for it, would you send me a sample code using 'form_access' to trap the error ?

P.S;Sorry for delayed response it was the new year's day by the lunar calendar