The connector and Replication Server have been built using different canonical interface (CI) versions.
T. 2010/04/29 16:32:54. (17): Version [3.1] of Connector [ora.oci], is incompatible with CI version [3.2].
This trace occurs when a connector is built and based upon a version of the Canonical Interface (CI) specification that differs from that which Replication Server has been built with. In the message above, the Oracle connector is compatible only with CI version 3.1 while Replication Server requires CI version 3.2.
strings libsybeconn.dll | grep Express
Sybase ExpressConnect-Library/15.5/P/RCI 3.2/ NT (IX86)/Windows 2003/1/DEBUG/Thu Apr 29 08:40:08 2010