Sqlldr v11 Unable to locate character set handle for character set ID

Question

Good day,
Having recently migrated to a 11g oracle database(11.2.0.1.0) from 9i on a test server, running SQL loader gives/throws the above error.
I've seen a few posts about this but with pretty vague explanations, below is what my bash profile looks like though and i compared NLS_PARAMETERS to another server that already has version 11 running.
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi
# User specific environment and startup programs
export ORACLE_SID=mtctst
export ORA_NLS10=$ORACLE_HOME/nls/data
export ORACLE_BASE=/oracle/app/product
export ORACLE_HOME=/oracle/client/11.2.0/dbhome_1
#export ORACLE_HOME=/oracle/client/9.2.0
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib/X11; export LD_LIBRARY_PATH
PATH=$ORACLE_HOME/bin:$HOME/bin:/bin:/usr/bin:/usr/local/bin:/bin/X11;
export PATH
#export LD_LIBRARY_PATH=$ORACLE_HOME/lib
#LD_LIBRARY_PATH=$ORACLE_HOME/lib32:$LD_LIBRARY_PATH
#LD_LIBRARY_PATH_64=$ORACLE_HOME/lib
#export LD_LIBRARY_PATH
#export LD_LIBRARY_PATH_64
#PATH=$ORACLE_HOME/bin:$HOME/bin:/bin:/usr/bin:/usr/local/bin:/usr/bin/X11; export PATH
#PATH=$PATH:$HOME/bin
#export PATH
umask 002
unset USERNAMEYour assistance will be appreciated.
Regards,

Answer 1

The complete command as follows:
sqlldr userid=user/password@alias control=myctlfile.ctl log=$logfile discard=$CUR_DIR$oldfilename.discard bad=$CUR_DIR$oldfilename.bad silent=feedback errors=10000000I'm running the command on the database server that gives the following error with log entries:
File found: gsmoly2012080612005072206
SQL*Loader: Release 11.2.0.1.0 - Production on Mon Aug 6 16:36:09 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
SQL*Loader-282: Unable to locate character set handle for character set ID (178).
after main file sqlldr before test if sqlldr was successfull: gsmoly2012080612005072206
in mystring_risk before assign can_continue = blank: PBXOG,,26492092,,,120806,115829,120806 115829,22,,811274127,,,,,,0,,,WORK/gsm/data/gsmoly2012080612005072206,9833407,OLY.GSM  ,
SQL*Loader: Release 11.2.0.1.0 - Production on Mon Aug 6 16:36:18 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
SQL*Loader-282: Unable to locate character set handle for character set ID (178).
value of can_continue after sqlldr of risk file: F