diff --git a/lib/libem.bash b/lib/libem.bash
index cf4af5e..b86c8dd 100644
--- a/lib/libem.bash
+++ b/lib/libem.bash
@@ -2,6 +2,11 @@
 
 PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin
 
+shopt -s expand_aliases
+
+source	"${PSI_PREFIX}/${PSI_CONFIG_DIR}/profile.bash"
+module use unstable
+
 declare -r	MODULECMD="${MODULESHOME}/bin/modulecmd"
 
 declare -r	BUILDSCRIPT=$( cd $(dirname "$0") && pwd )/$(basename "$0")
@@ -503,12 +508,13 @@ function em.install_doc() {
 }
 
 function _set_link() {
-	[[ ${cur_module_release} == ${MODULE_RELEASE} ]] && return 0
 	local _path
 	if [[ "${cur_module_release}" != '' ]]; then
 		_path="${PSI_PREFIX}/${PSI_MODULES_ROOT}/${MODULE_FAMILY}${cur_module_release/.stable}/${MODULE_NAME}"
-		info "Removing old sym-link \"${_path}\" ..."
-		rm "${_path}"
+		if [[ -e "${_path}" ]]; then
+			info "Removing old sym-link \"${_path}\" ..."
+			rm "${_path}"
+		fi
 	fi
 	(
 		_path="${PSI_PREFIX}/${PSI_MODULES_ROOT}/${MODULE_FAMILY}${MODULE_RELEASE/.stable}/${MODULE_NAME%/*}"
diff --git a/scripts/OPAL.build b/scripts/OPAL.build
index aa49cc3..fca9ff3 100755
--- a/scripts/OPAL.build
+++ b/scripts/OPAL.build
@@ -2,18 +2,18 @@
 
 source "$(dirname $0)/../lib/libem.bash"
 
+# add -fopenmp to CC and CXX, if you want to compile with OpenMP
 function em.configure() {
-	CC="$MPICC -fopenmp" CXX="$MPICXX -fopenmp" cmake \
+	CC="$MPICC" CXX="$MPICXX" cmake \
 		-DCMAKE_INSTALL_PREFIX="${PREFIX}" \
 		-DCMAKE_BUILD_TYPE=RELEASE \
 		-DENABLE_SAAMG_SOLVER=TRUE \
 		"${MODULE_SRCDIR}"
 }
 
-em.add_to_family 'Tools'
+em.add_to_family 'MPI'
 em.set_runtime_dependencies "${COMPILER}" "${MPI}"
 em.set_build_dependencies 'cmake' "${COMPILER}" "${MPI}" 'hdf5' 'H5hut' 'trilinos' 'ippl' 'gsl'
-em.set_supported_compilers 'gcc/4.7'
+em.set_supported_compilers 'gcc/4.7' 'gcc/4.8'
 em.make_all
 
-