Please note that you can only enter/add Daylite 3 license into Daylite 3.
If the License starts with DL-1.0, then it's a Daylite 1.x license, and will not work in Daylite 3.

A Daylite 3 license will begin with either:
    DL-3.0       or     DP-3.0

The following training movie will help with adding a Daylite 3 license into Daylite 3
http://movies.marketcircle.com/mov/daylite3/EnteringDayliteLicense.mov

If you need to purchase an upgrade license, please visit the link below:
http://store.marketcircle.com/