Thanks for the reply. I found the issue on my end; however, in trying to setup the ComboBox how my end customer wants it to function, I'm still having problems. I'm sure it's possible, but I can't find the right combination of properties and possible events.
They do not want it to open on focus, but when it has focus they want it to open when they start typing and to be able to see what they are typing. They also want it to toggle from open to close if they click anywhere on the control. If they are typing and select an entry from either a mouse click or an enter key, it will close. Or by navigating away (lose focus) will close it also it.