printer not activated, error code -41

???????
This message appear on the client PC but not on mine (developper).

Thanks in advance
ced (french developper)
Developers can change the error message that is shown when an error occurs by calling:List of possible errors when the printer is not activated:
Error Code -20: Name of licensee could not be read
Source: License registry entry not found
Error Code -21: Activation code could not be read
Source: (Code registry entry not found)
Error Code -22: Activation code does not correspond to Licensee
Source: wrong combination of Licensee/Code
Error Code -30: Timeout, printer has timed out
Error Code -40: The activation code is not for the right Windows version (e.g. an activation code for XP 32-bits used under XP 64-bits)
Error Code -41: The activation code that is used is for a lower version number. (e.g. a 2.1 activation code used with version 2.5)