>When you say source, i assume you mean the data file, its a table in the database, the code I´m using /creatinfg is in form designer

Can you show your grid definiton and where/how do you set its RecordSource. Do you change the grid's recordsource on the fly?

BTW, if you want, you can ask your question in Spanish, there are lots of people here who can help you in Spanish (I'm not one of them, unfortunately).

BTW, may be your form can not find your table? Can you put some test in the form's Load for the table existance?

E.g.

messagebox(DBF('myTableUsedForGrid'))