>Hi Jay,
>
>>I have a filter on another table, but not the Covr table. The debugger says that these are all valid values also.
>
>LOCATE can trigger a number of expressions. Do you have any relations set up? Is there any temporary index that might call THISFORM? One attempt would be to step into the LOCATE statement with F8 (step into button in the debugger). You could also loop through all tables and print all expressions: Filter, relation, index.

Ok, I did find an active filter on that table that used THISFORM. A coworker suggested, because we can't change the filter expression right now, that I use the table with the AGAIN clause. Does this seem reasonable?