Hmmm. Brand new install. No mods anywhere. http://www.guineapighome.com/ads/
If you scroll down to the bottom section, of "PhotoPost Classifieds Ad Placement" Step 1 of 3 --pulldown is empty. Also, same issue when you select Place an Ad at the top. You don't even get this Step 1 selection. You get nothing.
I have all 4 templates active. Multiple Categories, as you can see. Usergroup permissions set properly.
I JUST downloaded the latest build for an install yesterday, so this is the latest and greatest code.
And actually, that whole section shouldn't even show up for unauthorized people, such as guests, but it does.