Hello Edgar,
Thanks for the response.
We no longer support windows XP with our products as the support for the mentioned operating system has been deprecated by Microsoft.
You have mentioned that the key throws a new error with latest libraries (v7.8) over the original Envelope. However, it works fine with the latest 7.8 Envelope.
It is a recommendation from our side to use the latest tools for the users. Hence, we hope the concern is sorted as of now.
Although, if you have any further concerns then please reach us at our support portal at https://supportportal.gemalto.com/csm/ for further assistance.
Regards,
Parth Kaushik