>So....... someting in VFP 9.0 Service Pack 1 fails in the Index Tag if you use DTOC against a datetime field.... also, there is a built in filter with the tag too.... "status = 5" for the filter. If it helps in understanding this error.

MS changed the behavior of indexes to not allow potentially variable length keys. DTOC() can potentially have a variable length depending on how SET CENTURY is set.

Doug