This is a list of error codes generated when using an unactive PDF Printer. These are mainly messages and not errors because they inform the user what might be wrong in activation process.
[b]-20 [/b] Name of licensee could not be read (License registry entry not found)
[b]-21[/b] Activation code could not be read (Code registry entry not found)
[b]-22 [/b] Activation code does not correspond to Licensee (wrong combination of Licensee/Code)
[b]-30 [/b] Timeout, printer has timed out
[b]-40[/b] The installed license is not for the OS you are running the product on.
[b]-41 [/b] Trying to activate a new version of the PDF Converter with an activation key of the previous version.