eCart Display Manager will not add Columns

For some reason, my eCart Display Manager will not allow new columns to be added to the display.

In Step 2: Configure the columns of your cart.
When I click on "Add", the list of all my columns comes up, but selecting any of them only closes the popup and nothing is added. I've done this so many times before without any trouble. Am I missing a step? It happens whether I delete an old display and try to insert a new one, or if I create a new page.

Using eCart 5.0.7 on Mac OS X 10.7.5

Thanks,
TroyD

This is a bug that was introduced in Dreamweaver CS6.

I have found that if you keep trying to select the columns, after a few tries it will add.

I usually just create the display as is, then customize it in Dreamweaver.

place your cursor in one of the columns, then right click and select table -> insert column, then use the bindings panel to add the cart column binding.

Thanks Jason. Simple enough.

TroyD