--- config	2008-10-30 10:50:41.000000000 -0500
+++ config.mine	2008-12-03 23:13:29.000000000 -0600
@@ -42,7 +42,7 @@
   # so we need to check if its kdm-kde4 or another display manager
   if [ "$CURRENT_DEFAULT" = "/usr/lib/kde4/bin/kdm" ]; then
     CURRENT_DEFAULT=${THIS_PACKAGE}-kde4
-  else
+  elif [ "$CURRENT_DEFAULT" != "" ]; then
     CURRENT_DEFAULT=$(basename $CURRENT_DEFAULT)
   fi
   if [ -n "$CURRENT_DEFAULT" ]; then