You are quite right it was the Autosize thing that did it. I removed them all and its working fine now. Great detective job!
----------------------------------------------------- Hi, When i try to show a empty grid, i don't have small cells like you. Do you call AutoSize between AddGrid and Show ? Autosize calc mimimum size of each cell for maximise cell display, but if you have empty cell, you have something like your second picture. See attached sample. Laurent.