kill_fat_sessions

I just upgraded IDS11.70 C3 to C4 ( 11.70.TC4IE ) on Windows 2008 Enterprise, SP2 . I installed over the top of the C3 installation. When I restarted IDS, the only error in the log is for “kill_fat_sessions” as below. Everything seems to be running OK. Is there something I should do about this error? 14:07:53 On-Line Mode 14:07:56 SCHAPI: Started dbScheduler thread. 14:07:56 Booting Language <spl> from module <> 14:07:56 Loading Module <SPLNULL> 14:07:56 Auto Registration is synced 14:07:56 (258): ERROR: C Language Symbol <kill_fat_sessions> (procid 554) not found in <CNULL> 14:07:56 (-1): ERROR: Loading Routine <kill_fat_sessions> procid=554 14:07:56 (258): ERROR: C Language Symbol <kill_idle_sessions> (procid 555) not found in <CNULL> 14:07:56 (-1): ERROR: Loading Routine <kill_idle_sessions> procid=555 14:07:56 Updating Low Memory Manager to version 11 14:07:56 SCHAPI: Started 2 dbWorker threads. 14:07:58 Defragmenter cleaner thread now running 14:07:58 Defragmenter cleaner thread cleaned:0 partitions 14:08:56 Loading Module <$INFORMIXDIR/extend/ifxmngr/ifxmngr.bld> 14:08:57 The C Language Module <C:\\\\Informix/extend/ifxmngr/ifxmngr.bld> loaded