Enabling debugging in any arduino project will prompt for a license key. Please start the 30 day trial and I will email license keys to everyone over the next week.

Debugger  license keys give time unlimited use of the debugger, any number of installs on up to 3 machines.

You will need to upgrade by may 13th to the Rc version otherwise the beta debugger will expire. 

Sorry for the short notice.

Thanks to everyone for your kind emails, great feedback and for the articles I see around the web. The debugger will improve dramatically over the next few months. 

Charging a small fee will allow professional help to be sought to document and improve the product. This is why we will have license keys.

Thanks