Oh Peter, How did you know? It's Matrixone. (www.matrixone.com) Edit: was Ematrix

There isn't a single drop down chooser any where in the app. Any field that has to be revised brings up some kind of page. Usually a search tool where you type in what you wish to enter, hit find, then from the results, usually a list of one item, choose, then accept. After which you need to refresh the page where you started so that it actually shows the change.

Frack!