>>Hello Maria,
>>By any chance are you opening your table in an area greater than
>>255, if this is the case you will have a GPF for sure, that is
>>a known problem in VFP, you can not populate a grid with a table
>>that is open in a workarea greater than 255. That happens when you
>>use SELECT(1) to have an empty workarea or USE MyTableName in 1.
>>Hope this helps.
>
>
>Also, do you know if this problem is fixed in VFP 5.0?
>
>Maria

I am glad that I could help,
The problem is documented in the Knowledge Base, the article
number is Q141950 , they fixed the problem in 5.0a, I don't
know about 5.0. They say that it happens when you change the
recordSource property, but I think it happens even if you don't do
that.

Here is exactly what the article says :

PSS ID Number: Q141950
Article last modified on 01-08-1996
PSS database name: FOXPRO

3.00

WINDOWS


---------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 3.0
---------------------------------------------------------------------

SYMPTOMS
========

A general protection (GP) fault occurs when you change the RecordSource
property of a column in a grid.

CAUSE
=====

The GP fault may be caused by opening a table in area 256 or greater. For
example:

USE TEST IN SELECT(1)

This uses the last available work area, usually 32767.

STATUS
======

Microsoft is researching this behavior and will post new information here
in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Create a free table called Test with two fields named First and Last.
Make both fields Character(10). Enter a couple of rows of sample data.

2. Create a blank form.

3. Add a grid to your form and change its ColumnCount property to 1.

4. Add a command button to your form, and place the following code in its
Click event:

THISFORM.Grid1.Column1.ControlSource = "last"

5. Add the following code to the Init event of your form:

USE TEST IN 256
THISFORM.Grid1.RecordSource = "test"

6. Run the form, and click the command button.

The GP fault occurs with details similar to the following information:

VFP caused an invalid page fault in
module KERNEL32.DLL at 0137:bff858c0.
Registers:
EAX=7fd89e61 CS=0137 EIP=bff858c0 EFLGS=00010202
EBX=009dfe28 SS=013f ESP=008e0000 EBP=008e03bc
ECX=00000000 DS=013f ESI=815958c0 FS=3be7
EDX=c001ebf0 ES=013f EDI=815a8f08 GS=0000
Bytes at CS:EIP:
55 a1 78 c2 fb bf 8b ec 83 ec 70 8b 08 53 56 89
Stack dump:
ffecbad7 008e0030 008e0014 0000000e
00000004 c0000005 00000000 00000000
7fd89e61 00000002 00000000 7fd89e61
0001001f 00000000 00000000 00000000

Additional reference words: 3.00 VFoxWin
KBCategory: kbtool kbprb
KBSubcategory: FxtoolFormdes
=============================================================================
Copyright Microsoft Corporation 1996.