diff --git a/mg/cshrc b/mg/cshrc
index 3669a25..f3b32f3 100644
--- a/mg/cshrc
+++ b/mg/cshrc
@@ -41,6 +41,14 @@ setenv PB "GMAKE_LIB_PARALLEL=-j$cpu_count GMAKE_SYSTESTS_PARALLEL=-j$cpu_count"
 setenv PB2 "GMAKE_EXEC_PARALLEL=-j"`/user/icdet/bin/figure_gmake_exec_ness`
 alias pmake 'gmake $PB $PB2'
 
+if ( -x /share/cal_nightly/latest ) then
+	setenv IWA /share/cal_nightly/latest
+else if ( -x /wv/cal_nightly/latest_ube ) then
+	setenv IWA /wv/cal_nightly/latest_ube
+else if ( -x /sj/cal_nightly/latest_ube ) then
+	setenv IWA /sj/cal_nightly/latest_ube
+endif
+
 #
 #	MG test environment (These are needed for terra)
 #
@@ -63,8 +71,7 @@ endif
 #
 if ( -e /tools/ActivePython-2.5.6.10-linux-x86/bin/post-review ) then
 	setenv PATH $PATH\:/tools/ActivePython-2.5.6.10-linux-x86/bin
-endif
-if ( -e /wv/pevtools/ActivePython-2.5.4.4-linux-x86_64/bin/post-review ) then
+else if ( -e /wv/pevtools/ActivePython-2.5.4.4-linux-x86_64/bin/post-review ) then
 	setenv PATH $PATH\:/wv/pevtools/ActivePython-2.5.4.4-linux-x86_64/bin
 endif