Update. I was messing with it and found something interesting. Under the actions tab I changed the "Trigger" to "on Focus" instead of on "mouse down", now I only get the above error when I first click on the dropdown1 box either after first opening the PDF or after coming out of edit mode. Then after that first time I don't get any more errors. I am thinking it has something to do with the settings or something of the like.
Can anyone help?
Bruce