diff --git a/Kinetic_data_structures/demo/Kinetic_data_structures/3d_gui.C b/Kinetic_data_structures/demo/Kinetic_data_structures/3d_gui.C
index 562b8a25bc9..538b9318bad 100644
--- a/Kinetic_data_structures/demo/Kinetic_data_structures/3d_gui.C
+++ b/Kinetic_data_structures/demo/Kinetic_data_structures/3d_gui.C
@@ -151,8 +151,12 @@ int main(int argc, char *argv[])
         return qtsim->begin_event_loop();
     }
 #else
-    bool app_3d_gui_compiled_without_CGAL_USE_SOQT_defined;
-    return 0;
+    std::cout << "An install of Inventor and SoQt are required for this demo.  "
+      "Please make sure they are installed and then compile "
+      "using the makefile 'makefile.soqt'.\n"
+      "They can be found at http://www.coin3d.org or as an rpm from "
+      "your linux distribution (they are part of Fedora extras, for example).\n";
+    return EXIT_FAILURE;
 #endif
 
 }
diff --git a/Kinetic_data_structures/demo/Kinetic_data_structures/Delaunay_triangulation_3.C b/Kinetic_data_structures/demo/Kinetic_data_structures/Delaunay_triangulation_3.C
index 99c5e139c4d..5e97b769587 100644
--- a/Kinetic_data_structures/demo/Kinetic_data_structures/Delaunay_triangulation_3.C
+++ b/Kinetic_data_structures/demo/Kinetic_data_structures/Delaunay_triangulation_3.C
@@ -113,7 +113,11 @@ int main(int argc, char *argv[])
     kdel->set_has_certificates(true);
     return qtsim->begin_event_loop();
 #else
-    bool Delaunay_triangulation_3_compiled_without_CGAL_USE_SOQT_defined;
+    std::cout << "An install of Inventor and SoQt are required for this demo.  "
+      "Please make sure they are installed and then compile "
+      "using the makefile 'makefile.soqt'.\n"
+      "They can be found at http://www.coin3d.org or as an rpm from "
+      "your linux distribution (they are part of Fedora extras, for example).\n";
     return EXIT_FAILURE;
 #endif
 
diff --git a/Kinetic_data_structures/demo/Kinetic_data_structures/makefile b/Kinetic_data_structures/demo/Kinetic_data_structures/makefile
deleted file mode 100644
index 7e90b6906bc..00000000000
--- a/Kinetic_data_structures/demo/Kinetic_data_structures/makefile
+++ /dev/null
@@ -1,90 +0,0 @@
-# Created by the script cgal_create_makefile
-# This is the makefile for compiling a CGAL application.
-
-#---------------------------------------------------------------------#
-#                    include platform specific settings
-#---------------------------------------------------------------------#
-# Choose the right include file from the <cgalroot>/make directory.
-
-# CGAL_MAKEFILE = ENTER_YOUR_INCLUDE_MAKEFILE_HERE
-
-include $(CGAL_MAKEFILE)
-
-#---------------------------------------------------------------------#
-#                    compiler flags
-#---------------------------------------------------------------------#
-
-CXXFLAGS = -g \
-           -I$(CGAL_INCL_DIR) \
-           $(CGAL_CXXFLAGS) \
-           -Iinclude\
-           $(LONG_NAME_PROBLEM_CXXFLAGS)
-
-#---------------------------------------------------------------------#
-#                    linker flags
-#---------------------------------------------------------------------#
-
-LIBPATH = \
-          $(CGAL_LIBPATH)
-
-LDFLAGS =  \
-          $(LONG_NAME_PROBLEM_LDFLAGS) \
-          $(CGAL_LDFLAGS) 
-
-QT_LDFLAGS =  \
-          $(LONG_NAME_PROBLEM_LDFLAGS) \
-          $(CGAL_QT_LDFLAGS) 
-
-#---------------------------------------------------------------------#
-#                    target entries
-#---------------------------------------------------------------------#
-
-all:            \
-                Delaunay_triangulation_2$(EXE_EXT) \
-                Delaunay_triangulation_3$(EXE_EXT) \
-                2d_gui$(EXE_EXT) \
-                3d_gui$(EXE_EXT) \
-                generate_data$(EXE_EXT) \
-                Delaunay_triangulation_stable_subset_2$(EXE_EXT) \
-                regular_triangulation_3$(EXE_EXT) 
-
-
-
-generate_data$(EXE_EXT): generate_data$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)generate_data generate_data$(OBJ_EXT) $(LDFLAGS)
-
-
-Delaunay_triangulation_2$(EXE_EXT): Delaunay_triangulation_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Delaunay_triangulation_2 Delaunay_triangulation_2$(OBJ_EXT) $(QT_LDFLAGS) 
-
-Delaunay_triangulation_3$(EXE_EXT): Delaunay_triangulation_3$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Delaunay_triangulation_3 Delaunay_triangulation_3$(OBJ_EXT) $(LDFLAGS)
-
-Delaunay_triangulation_stable_subset_2$(EXE_EXT): Delaunay_triangulation_stable_subset_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Delaunay_triangulation_stable_subset_2 Delaunay_triangulation_stable_subset_2$(OBJ_EXT) $(QT_LDFLAGS)
-
-regular_triangulation_3$(EXE_EXT): regular_triangulation_3$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)regular_triangulation_3 regular_triangulation_3$(OBJ_EXT)  $(LDFLAGS) 
-
-2d_gui$(EXE_EXT): 2d_gui$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)2d_gui 2d_gui$(OBJ_EXT) $(QT_LDFLAGS) 
-
-3d_gui$(EXE_EXT): 3d_gui$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)3d_gui 3d_gui$(OBJ_EXT) $(LDFLAGS)
-
-clean: \
-                   2d_gui.clean \
-                   3d_gui.clean \
-                   generate_data.clean \
-                   Delaunay_triangulation_2.clean \
-                   Delaunay_triangulation_3.clean \
-                   Delaunay_triangulation_stable_subset_2.clean \
-                   regular_triangulation_3.clean 
-
-#---------------------------------------------------------------------#
-#                    suffix rules
-#---------------------------------------------------------------------#
-
-.C$(OBJ_EXT):
-	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) $<
-
diff --git a/Kinetic_data_structures/demo/Kinetic_data_structures/regular_triangulation_3.C b/Kinetic_data_structures/demo/Kinetic_data_structures/regular_triangulation_3.C
index 010e2c906b8..144dafe870c 100644
--- a/Kinetic_data_structures/demo/Kinetic_data_structures/regular_triangulation_3.C
+++ b/Kinetic_data_structures/demo/Kinetic_data_structures/regular_triangulation_3.C
@@ -65,7 +65,11 @@ int main(int argc, char *argv[])
 
     return qtsim->begin_event_loop();
 #else
-    bool regular_triangulation_3_compiled_without_CGAL_USE_SOQT_defined;
+    std::cout << "An install of Inventor and SoQt are required for this demo.  "
+      "Please make sure they are installed and then compile "
+      "using the makefile 'makefile.soqt'.\n"
+      "They can be found at http://www.coin3d.org or as an rpm from "
+      "your linux distribution (they are part of Fedora extras, for example).\n";
     return EXIT_FAILURE;
 #endif
 };