David,

>I am the only user on the application. Why do I keep receiving this error message?
>
>Another user has changed or deleted the data. Cannot save your changes. Do you want to update your data with the original values? (All your changes will be lost.)>

It sounds like something is awry in the way you have set up your form's data environment...is it possible you're manipulating the same view from two different business objects?

Regards,