All my work is local (no network involved).

Using Trend Micro Internet Security. (Am curious why this would be relevant and, if so, why it would just have started recently)

>>I've been getting the following error message every day or so:
>>
>>Memo File (Form-Name).SCT is missing or invalid.
>>
>>This occurs after I have been working on a form, when I try to save it. It's not the same form every time or anything, so I can see no pattern.
>>
>>Now, obviously, the SCT had to exist when I opened the form to edit it, and I can see that it exists, so it must have become invalid.
>>
>>How can that happen, if I am saving it???
>
>What is the antivirus software you're using and are you saving locally or on the Network?