Try to delete foxuser.dbf. If it doesn't help, start VFP9.exe once with -A command-line switch or delete following key from the registry

HKEY_CURRENT_USER\Software\Microsoft\VisualFoxPro\9.0

>For testing I changed the format script from Arabic to Western. When I changed it back to western script I get some strange behavior: If I type code in the command window or program file, the code doesn't show.
>
>I tried almost everything: deleted foxcode.dbf, DO (HOME()+"VFPClean.app") and reinstalled VFP. Nothing worked for me.