Registration issue with latest version
Error: Registration could not be completed as the license file did not get saved.
If you get this error message when trying to register, it is most probably a permissions issue to write the registration file to your computer.
If you are registering with a standard user key (the most typical), PDF Studio needs access to write to your user directory. If you are a Mac user, check this related post Permissions Denied Error Message on Mac OSX.
If you are registering with a machine key (used in volume distribution), PDF Studio needs access to write to the installation directory or the Program Data directory. If you are using User Account Control (UAC), make sure you run as administrator.
Also make sure that you are running the latest version of PDF Studio, and register again.
Registration & Unregistration in version 8.0 and 8.1: There may be issues when trying to register or unregister PDF Studio version 8.0 and 8.1. To resolve this, upgrade to version 8.4.