>The subroutine in which the error occurs has no LOCAL definitions.
>
>Could the error arise if I have a LOCAL variable defined in a higher level >routine? I don't think that's the case, but it is possible.

No, that wouldn't be a problem.

In looking in the help file, I find three errors that have to do with "Cannot Redefine":

1) Issuing a DEFINE POPUP while the menu is active in memory (Error 175)
2) Issuing a DEFINE MENU while the menu is active in memory (Error 174)
3) Trying to assign a value to a reserved system variable or to THIS, THISFORM or THISFORMSET (Error 1930)

My guess would be the 3rd one.

--Brad