Thanks for the answer, Tore, anyway I think it is not the case. I fixed copying original form (with the same select instruction) and no problem. Perhaps somehing was broken with the form. I know grid get blank when you redefine recordsource but losing column names, headers and as you can see in the image has no sense.

>http://weblogs.foxite.com/andykramek/2005/03/19/using-a-safe-select-to-preserve-your-grid/
>
>>Hi Friends:
>>
>>I was fixing a form because it had a few code errors but when I tried I found out a rare error.
>>
>>Several members of the grid disappeared. I debugged and I saw everthing goes fine till I execute a SELECT SQL sentence. After that the grid columns has the aspect you may see in the attached image.
>>
>>I must say there is another form of another system almost the same and it Works perfectly
>>
>>I copied and pasted the same grid from the other form but the result is the same.
>>
>>Can anyone give me a clue?
>>
>>TIA
>>
>> Héctor