There are situations when manual Zend Studio registration is needed, i.e. a registration procedure that bypasses the standard Registration Dialog.
Code Tracing is disabled when entering a License key generated for a previous ZendServer version.
Troubleshooting invalid license in Zend Guard registration.
Zend Guard renewal license makes new licenses not valid for old applications based on different private key from installation. After Zend Guard license renewal, use the private key import/export to ensure you can issue a license to your deployed application.
Upgrade Platform 2.1.x to 2.2.x fails to load license details.