70-315: Lab of Chapter 5

This is a repeat of a problem someone brought up WAAAY back in
February. I'm having the same problem, and wondering if anyone knows
the answer (or can point me to a source that might answer my question)?

I'm preparing for 70-315 and I use the self-paced training kit
(developing web applications). I'm having difficulties with the lab of
chapter 5.

....

On AddContact.aspx is ... a DropDownList (drpContactTypes) where a
contacttype should be chosen. This DropDownList stays empty, no matter
what I try. I followed everything from the book, so it
should work.

[Has] anyone had this problem before?

2obvious