It seems like I get this problem if I put CE in the Footer template. The datagrid example works, and so does my app if I only have CE in the Edit item template. As soon as I put CE into the footer template, the datagrid cntrol cannot render.
When using the footer, CE should be rendered av displayed in VS design view. When using CE only in Edit item template, the control isn't visible in VS, and doesn't cause any problem.

BTW, the CE in this forum has now 8 lines of toolbarbuttons. Seems like the CE width is a tad to small.

Regards,
Zapotec