Framework TextEncoding

error

Hello,
this error appears on a Windows system running a xojo application wich use UTF-8 enconding system.
Since is the first time I see it, could someone address me in the right direction in order to try to solve it?

Update the windows OS?
Xojo is perhaps not supporting the windows version you show there.

:thinking: … the look of the window in fact it is suspicious.
Maybe you are right. I’m investigating…