We recently upgraded from ArcGIS 9.3.1 to 10. In ArcMap, when I am editing features, I've noticed on the attribute window that some of the fields are showing up in light green. On those fields, the values are not in a drop down combo box like they were in all the previous versions, instead there is a button with three "dots" on it, and I have to click that to then select a value. This is only on certain fields, and a few times when I've selected a value ArcMap will subsequently crash. What is going on here? Does it have something to do with the layer files? Do they work differently in 10 than they did in 8.x-9.x?
I have included some screenshots that illustrate what I am talking about. You can see the "green" fields in the attribute window, and you can see how I get the "button" in one of those fields, but the regular drop-down in the field right below it.
If you have any suggestions why this is happening and what I need to do to fix it, I would appreciate it very much.