Ray Licenses code

You're trying to register a Free widget with an Ad-Free license.
So, now you need to replace the Free widget with its Ad-Free version.
Please refer to this FAQ:
http://www.boonex.com/trac/ray/wiki/GenRayFAQs#HowcanIreplaceFreeRaywidgetswithAd-Freeonesandviceversa

Delete the file ray/modules/im/xml/main.xml

Then upload a new copy from package.
and chmod 666.

Now enter the license, it will accept.