"Array Dimensions are Invalid"

Does anybody familiar with the error "Array Dimensions are Invalid." There are two remote users at my work keep getting that error when they click the browse button on our database application built using Visual FoxPro. We store our database in SQL Server 6.5 and those remote users connect to the SQL Server through Citrix Metaframe. Please note that only those two users get that message, while the other 10 remote users have never had one.

Many thanks in advance!