NULLable Key ?

[cal]

Randall,____The report I^m having trouble with has two temporary indexes, one for the master dbf and one for the related dbf (child). The one for the master has a udf in its key which looks up a vendor^s company name using the vendor number... BUT the error is reported regarding the index for the child dbf, which I have reduced to a single field name in effort to find a way out of the fog here. No soap!____Also I cannot open the report definition to change anything. It won^t allow the report definition to be opened if there^s something wrong with the index, or even if it thinks there is (!). The (!) symbol denotes steam coming out my ears.____This one is driving me nuts, which actually may be a rather short trip, but without being told, I suspect it^s making my look somewhat incompetent in the eyes of my client.____Any thoughts?____cal