Capture stopped due to "10703 - can't read partition cache....." (4286753)

After upgrading to Shareplex 6.x or up from a lower version, one finds that the Capture is stopped due to error:

sp_ctrl (source_servername:port_num)> show

Process    Source                   Target       State                   PID
---------- ------------------------ ------------ -------------------- ------
Capture    o.source_SID                            Stopped - due to error 
Read       o.source_SID                            Running               10189

The event log shows the following:

sp_ctrl (source_servername:port_num)> show log reverse

Info     2008-10-30 14:38:08.561242 11414 1 Capture exited with code=1, pid = 10191  (capturing from source_SID)
Error    2008-10-30 14:38:08.541652 10191 1 Capture stopped: Internal error encountered; cannot continue  (capturing from source_SID)
Error    2008-10-30 14:38:08.537874 10191 1 Capture: 10703 - can't read partition cache o.source_SID 1  (capturing from source_SID) [module oct]
Error    2008-10-30 14:38:08.532976 10191 1 Capture: 15024 - OCIStmtExecute failed with ORA-942.  (capturing from source_SID) [module osp]
Notice   2008-10-30 14:38:07.791338 10191 1 Capture: Replicating according to target compatibility of "6.0.0.0"  (capturing from source_SID) [module utl]
Info     2008-10-30 14:38:07.076266 10191 1 Capture launched, pid = 10191  (capturing from source_SID)
Notice   2008-10-30 14:38:07.065254 10176 1 User command: oracle start capture (from source_servername.quest.com)