Mike,

>You are right, the delete mark was set to true. I changed it to True but it turns out this is not significant. The Grid still won't open.
>
>I have 2 free calls to MS and it looks like I will have to call them on this. MS seem to have an uncanny ability to have the defaults set so that things don't work. I had the same experience with VFP 6.0. It took hours to get one thing to work then that thing became a template for the slow journey to the next abnormal setting.

Honestly I think you'll get better/quicker answers here than you will from using a call to MS Tech Support.

I don't think many people use the Grid Builder all that much.

Are you positive the RecordSource for the grid is available at the time the form initializes? What are the non-default values of your Grid set to?