>I have two vfp5 apps that are suddenly having problems with the CLOSE DATA command. I SET DATA TO, then issue CLOSE DATA. The database is left open but is no longer selected. I know this is an issue when the database is in a project and the project is open, but that is not the case here. What else causes this behavior?

I can think of three things:

1. Try CLOSE DATA ALL
2. There are uncommitted changes
3. There is still a reference to the data, for example, a form that isn't visible.