I added a LampLinc device with the name Lamp Post and was able to add it to one of my areas.
Can you expand on what actually happened? Did the device move to the Device In Area window? What is the device type? Was this the first device being added to a new Area? When creating a new Area it is necessary to save the Area before devices can be added.
I will try to recreate using your information.
The device would show up in the devices available list but not copied when double clicked. Not the first device in area. I tried it in two areas as the 7th device in one and the 2nd in another. Double clicking would not move it to devices in area. Running IE on Vista Pro (32 bit)