Exporting a project.

I’ve finished a project, and I want to export it as an mp3. It is set as an mp3 (MPEG 1 LAYER 3 FILE), and I’ve clicked export. It now says: “Export range is empty. Please set the left and right locators.” I’ve already set how long I want the song to be with those white markers above the audio, but still this message continues to pop up. Can anybody help?

does it work when you try to export in Wave??? If yes you better off converting it to MP3 with another software

Are you sure you don’t have your locators reversed?

Thanks for all of the help…
Run into another problem though. It says "The license required for application ‘MP3 Encoder C’ was deactivated, because it needs to be validated.
Should the licenseserver validate the licenses now?

You can use the ‘Validate License Usage Periods’ wizard of the ‘eLicenser Control Center’ to validate this license later." I’ve then clicked ok. It now tells me to buy one of the products at this link:
http://www.steinberg.net/en/shop/accessories.html
Which one should I chose?

Hello Richard,

You need to purchase the Steinberg Mp3 Upgrade Patch:

http://www.steinberg.net/en/shop/buy_product/sku/500242444.html

Purchasing this upgrade will give you a 32 character activation code to download the license to your eLicenser will allow you the ability to export in the Audio Mixdown window using the MPEG 1 Layer-3 format which is the same as the Mp3 format.