>The new file is opening ok. And yes, the problem is with the grid going blank. Because when I assign again ian a routine like this:
>
>Thisform.GridLiquidac.Cod_Item.ControlSource = 'DETAILS.Cod_Item'
>
>The program return a error like this: Cant´t find Codig_Item

Is this a typo? The error you're showing doesn't match the code. But the problem seems to be with the table. If you suspend the code at this point and browse the DETAILS table, do you see the Cod_Item (or Codig_Item) column? The problem sounds like it's probably in the code you use to build the table.