I just got an Imp/Impee. I went through the Hello World example to create a program. In the planner, I saw my node with the label BLANK. I clicked the settings icon. The drop-down shows my program is selected but it is not running. If I click on it, it still does not run. To work around this, I created another program. Now the drop-down shows both programs and when I click on the new one, it runs immediately. If I select the old one now, it also runs correctly. Seems to be a Javascript issue not selecting a default item from the drop-down.
BTW, using an April Impee and Chrome on Mac