Hi Uncle Mike,
Sorry to resurrect this old question, but I'm again tinkering with this same problem.
Here is what I currently have, and what is happening as a result:
Context: Power, Time, Display Off (event)
I added the event context, because I don't want it annoying me if I am using the phone by popping up the clock app.
Tasks:Screen On, App > Desk Clock
When the profile activates, the screen comes on. Then, the desk clock appears for a second (black screen, clock only) and then it automatically kicks out to the regular Clock app (with buttons, weather, etc.)
I cannot seem to get it to go to the Desk Clock by itself.
HTC Desire with Sense. Using pre-installed app for the clock.
In my applications I have "Clock" and "Desk Clock". If I manually start "Desk Clock" I get exactly what I want. If I manually start "Clock" I get the clock page with weather and buttons. However, if I ask Tasker to start the "Desk Clock" app, I get the "Clock" screen instead.
Any advice? I've tried other clock apps, but none that I really like. The stock app is fine if it'll work correctly.
I don't have an HTC, so I can't do any testing with this specific app, but the way the app behaves sounds like it works similar to Navigation in Google Maps, where Navigation is just a "sub app" of Maps. You may want to try enabling "All" when selecting the app in Tasker, and see what other options show up.