Client Custom Table does not support field ID #8016

I got the following error when trying to run a bill for one client whom I recently changed to Electronic Delivery - LEDES1998B.   I was able to print bills for all other clients.  I ran a data verification with no errors.  Any suggestions as to what to do next?

Sage Timeslips has encountered an error

 Unknown field ID. The Client Custom table does not support field ID #8016.

 Area: Table

 Error Code: 2

 Class: tTableExceptionC

 Table: Client Custom (27)

 Field: 8016

 Record: n/a

 Version: 21.0.1.181

 Date: 6/30/2015

 Time: 2:48:17 PM

 Exception tTableExceptionC in module Timeslip.exe at 00136CE7.

Table: Client Custom

Record: 0

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