Many commands not working: just "error" in the command line...

I opened a support request end of February: No answer at all! Is this the support offered for DraftSight payed licenses? Anyway:

I notice several problems using DraftSight 2019 x64 SP3, for example with the HATCH command and inserting blocks commands from libraries.

At the click on the icon related to the command (e.g hatch), I see in the command line the string _HATCH and immediately below the string Errore. Nothing happens that allows to use the command. ( I attach a photo ).

This also happens when inserting blocks.

Several other commands reacts in the same way ("Error" appears in the command line and the command doesn't work)

Any help? Many thanks!