2383942 - Replication server upgrade failed with error 31090 'ct_results did not return a valid value' on rs_random; error 1028, and message 208 from server 'rs_encryptionkeys not found'

Upgrading replication server 32-bit 12.7 to 64bit 15.7.1 SP 201 failed with the message:

I. 2016/10/26 11:31:23. Using the value for entry 'RS_random' in config file.
E. 2016/10/26 11:31:23. ERROR #31090 GLOBAL RS(GLOBAL RS) - ic\encrypt\enc_csi.c(1603)
ct_results did not return a valid value.
E. 2016/10/26 11:31:23. ERROR #1028 GLOBAL RS(GLOBAL RS) - ic\encrypt\enc_csi.c(1603)
Message from server: Message: 208, State 1, Severity 16 -- 'rs_encryptionkeys not found. Specify owner.objectname or use sp_help to check whether the object exists (sp_help may produce lots of output).
'.
F. 2016/10/26 11:31:23. FATAL ERROR #18028 GLOBAL RS(GLOBAL RS) - \servmain\servmain.c(331)

Replication Server/15.7.1/EBF 23339 SP204 rs1571sp204/X64/Windows 2008 R2/2081/OPT64/Tue Dec 02 19:46:28 2014

Replication Server upgrade failed rs_encryptionkeys not found rs_random ct_results   , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , Problem