AI CS5 and CS6 stop accepting the extention

[Roberto5E2C]

Hello community, 

I had a weird behavior regarding our old AI CS5 and CS6 connected by our extention to an external softwar to transmit the draws.

Since 01/01/2021 we can't open the extention any more, just stop running without error.

We figured out that chage date of the PC to for example 12/25/2020 start working again.

There is some one here that have this behavior or know if it is a restriction in AI to oligate the customer to update to CC versions?

Please, let me know your comments

Roberto