When recording against a Flex Application a user may encounter a dialog stating:

 
This error is not a SilkTest error. This is a limitation within Flex Builder and is caused when the version of Flex Builder used to build the Flex application was not a full valid version or there was not a valid license available for Flex Builder. It is required to rebuild the application in Flex Builder using a full valid license or ensure that the build environment has access to the valid Flex Builder license.