In interactive sorting the OK button is disabled if you choose some items in the Bind Sort dialog in Crystal Reports.
The issue has been identified and tracked under ID ADAPT00791095. Specified Order is not supported for an interactive sort.
This is by design as Specified Order is not supported for an interactive sort.
CR2008 CR 2008 XIR3 XI R3 XI3.0 XI3 3 3.0 TITAN RN , 8838434 , KBA , BI-RA-CR , Crystal Reports designer or Business View Manager , Bug Filed
Crystal Reports 2008 V0