diff -u -r1.3 -r1.4
--- slic-ldpath.sh.in	12 Jul 2011 21:46:40 -0000	1.3
+++ slic-ldpath.sh.in	23 Aug 2011 22:35:35 -0000	1.4
@@ -3,37 +3,24 @@

 # This is a relocatable script for setting up the library load path for SimDist libraries
 # on multiple platforms (Linux, OSX, Cygwin).  It must be processed by SimDist's configure
 # to produce ./scripts/slic-ldpath.sh which can then be sourced on the user's machine.

-#
-# It tries to find the local SimDist installation using two ways...
-#
-# --Check for user setting of the SIMDIST_HOME variable.
-# --Check if SimDist root appears to be the current directory.
-#
-# If neither works, the load path won't be set and the script exits with an error message.
-# It does NOT call exit, as this would kill the user's shell if the script is included
-# or sourced.

+# The SIMDIST_HOME variable should be set before this script is included.  An error 
+# message is printed if the variable is not set.

 #
 # NOTE: The tricks used in ./scripts/slic.sh to find SimDist cannot be used here, 
 # because this script is included into the user environment rather than executed.
 #
 

-# Check for user setting of SIMDIST_HOME variable.
-if [ -n "${1}" ]; then
-    SIMDIST_HOME=$1
-else
-    # Check if in SimDist root area.
-    if [ -d ./packages/slic ]; then
-        SIMDIST_HOME=`pwd`
-    fi
-fi
-

 # Check that SIMDIST_HOME is setup and has a known sub-directory.  Messed up or incomplete
 # directory structure could get by this check, but it is probably good enough.

+if [ -z "${SIMDIST_HOME}" ]; then
+    echo "ERROR: Required SIMDIST_HOME variable is not set in environment."
+else

 if [ -d ${SIMDIST_HOME}/packages/slic ]; then
 
     echo "SIMDIST_HOME=${SIMDIST_HOME}"
 
     # Set library paths for packages.