Hi Naomi

>What is the font's settings on the machine in question? If you set your font to be large, then the HeaderHeight property must be bigger than in regular case.

Of the 2 original problem machines, one does have larger fonts than normal, I can ask the details form of the other machine. The grid having this problem has a HeaderHight of 0 as it is the Grid Footer class from downloads section.

Thanks for your responses.