I understand the problem. Including an integration with a validation plug-in would allow for a more robust solution for the end-user. I hope you will consider including a form element + adding validation classes to fields. This way you can incorperate a lot of error checking routines at once.
I see in the preview that you found a solution to the problem. Is is incorperated in the release yet?
I also have a request (maybe more for the feature request section). Is it possible to get the grid to save a row as soon as you select another one. This way you can click on a new row and the changes will be saved. If I get it to behave like that the grid will behave even more like a desktop grid.
Thanks for looking into this. Strange that you do not have this problem. I will try to describe what happens exactely. I have the problem on several machines (all XP) and both in IE6 and IE7. The problem is that the dropdown box closes before I can click on an entry with the mouse. I can select using the arrow keys, but only when I enter into the field using the TAB key will the value be saved to the db.
The problem still exists in the final preview in the “input types” demo.