I downloaded version 1.1 in April of 2006, not expecting much. I discovered that I didn't need to do anything other than have all the photos together that I wanted Calico to stitch. I expected to be required to carefully adjust each photo before Calico would handle the final alignment, but discovered that I didn't need to do anything. Once my test panorama was completed (with the watermark added), I decided to immediately purchase Calico. I downloaded Calico on the 12th, tested it on the 13th and 14th, and received the reg. key on the 15th. I had no trouble with receiving the key. Reply was prompt and Calico worked perfectly on my initial attempt after receiving the key. I tried a 360 degree panorama from photos taken in Humboldt Redwoods State Park. The stitched final outcome was amazing. I heartily recommend this app.