Thanks for the input, Tracy. But that did not help in this case.
Here is a snip of the code:

select crsBlob
index on obID tag obID
set order to tag obID
select crsPart
index on obID tag obID
set order to tag obID
select crsECR
set relation to obid into crsPart
set relation to obid into crsBlob additive
go top
skip 1 in crsPart

Thanks,
Cris