If you're a single-license user, you must activate your license within thirty days of installation. When you start Flex Builder, you will be prompted to enter the serial number. Likewise, if you installed the trial version of Flex Builder, you have 30 days to use it before the trial expires. Once expired, you need to purchase a license to continue using Flex Builder. Product activation does not require you to submit personal information, only your product serial number.
Each of the products within the Flex product family have separate licenses. For example, you need separate licenses for Flex Builder, Flex Charting, and Adobe LiveCycle Data Services ES. As noted above, when you purchase a Flex product, you have 30 days to activate it by entering the serial number. You can also install trial versions of these products and evaluate them for 30 days. When you acquire a license for a Flex product, you can activate the product from within Flex Builder.
Activate a Flex product in Flex Builder
If you're using the plug-in configuration of Flex Builder (see Flex Builder configurations) and the 30-day activation or trial has expired, the Eclipse workbench and all other plug-ins will continue to work properly. You will not, however, have access to the Flex Builder features (for example, opening an MXML file). When you acquire a serial number you can unlock Flex Builder (or other Flex products) by entering the serial number using the procedure described above.
For more information, visit the Adobe Product Activation Center at www.adobe.com/go/activation.