VFP 3 is very fussy about exclusive use of the DBC before you can see the RI settings/builder. Are you sure you have exclusive access? If possible, close the project and everything else then reopen the DBC.

>I have a project I have been working on for several months in VFP 3.0. Today I went to look at the Referential Integrity settings and the option is grayed out from the menu. If I double click on a relation and then click the Referential Integrity button, it flashes but the builder is not displayed. Any ideas what has happened? Thanks,
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>Shane