I just bought lightroom 4. when regustering it is asking for origional adobe number. I am a new to this. When else do I need to make this work.?
Did you buy the upgrade or the full version?
If you bought the upgrade you need to enter the original license number of the previous version. If you bought the full version you would have been sent the license key.
If you are not sure log into your Adobe account and go to my products (or something similar) and it will tell you what you have, If you did buy the upgrade you should see the serial number of your qualifying product. If you bought the upgrade and don't have a qualifying product you need to contact Adobe Customer Support and change your purchase.
Hope this helps
Amazon is great for returns on unopened software, not sure about already opened software. What you have purchased is an upgrade, which requires a serial number from Lightroom 3 full version. You want the Lightroom 4 full version and it should retail for about 150 bucks.