Start from re-indexing all tables.

>A client has been in touch and the only info I have is that they've had an Internal consistency error when trying to run our very old FPD26 app (NOT written by me - but for my sins I have to support it!)
>
>Of course, Help says to note what you (the programmer) were doing when the error occurred and get in touch with MS support (through what channels, or to what team specifically - no word - typical Help explanation).
>
>I should point out that they've recently had a licence update, with some minor tweakings to some of the s/w, though it is a great whopping menu-driven system and I don't know whether they were goofing with any of the changed stuff.
>
>Can anybody shed some light/experience on this elusive error?
>
>'ppreciate it
>
>Terry