>Hi folks!
>
>In our Form.load() Method we do since decades some settings for the private Dataenvironment :
>

>...
>set safety off
>set talk off
>set escape off
>SET DELETED ON
>SET SYSFORMAT ON
>...
>

>since 2-3 Years sometimes some Users get c00005 Errors in the Line SET SYSFORMAT ON.
>
>Any suggestions what this could be?

I think the first thing I'd look is whether the users with problems have something in common in their system settings that SET SYSFORMAT ON is setting things to.

Tamar