Hi,
update RemObjects_Server_Synapse_Reg.pas
as
{$IFDEF DESIGNTIME} //added
{$IFDEF DELPHI7UP}
UnlistPublishedProperty(TROSynapseSuperTcpServer, 'UseIPv6');
{$ENDIF}
{$ENDIF} //added
and relaunch Install_DA.cmd
(or Install_RO.cmd
) with admin rights