I have column which used to have cellstyle type as combo but there is no options.

I have these problems after from 1.7 to 4.5.

Do I need to check some property setting.

Attached file as to how it looked in version 1.7.
canjacob attached the following image(s):
In the latest iGrid's, there is no need to specify the combo cell style. To make a cell work as combo list, it is enough to attach a drop-down list to the cell. It was a redundant setting we abolished.