Decimal and 1000 Separator setting

SOLVED

Hi 

My PC crashed and I've successfully re-installed pastel partner v 14.2.2 on a new PC.  The problem is the format is now set on 1.000,00 and I need it to be 1,000.00 and the system does not allow me to change it.  When I change it on Windows first it gives me an error

Please assist