diff --git a/Makefile.in b/Makefile.in
index c0a70b36..5bb2f273 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -34,9 +34,9 @@ host_triplet = @host@
 subdir = .
 DIST_COMMON = README $(am__configure_deps) $(srcdir)/Makefile.am \
 	$(srcdir)/Makefile.in $(srcdir)/config.h.in \
-	$(top_srcdir)/configure AUTHORS COPYING COPYING.LIB ChangeLog \
-	INSTALL NEWS TODO config.guess config.sub depcomp install-sh \
-	ltmain.sh missing mkinstalldirs
+	$(top_srcdir)/configure AUTHORS COPYING ChangeLog INSTALL NEWS \
+	TODO config.guess config.sub depcomp install-sh ltmain.sh \
+	missing mkinstalldirs
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
diff --git a/configure b/configure
index 221887f6..d4435cb0 100755
--- a/configure
+++ b/configure
@@ -2367,7 +2367,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE=netgen
- VERSION=5.0
+ VERSION=4.9.2
 
 
 cat >>confdefs.h <<_ACEOF
diff --git a/configure.in b/configure.in
index f597e94c..29b8e8f2 100644
--- a/configure.in
+++ b/configure.in
@@ -1,7 +1,7 @@
 AC_INIT(configure.in)
 
 AM_CONFIG_HEADER(config.h)
-AM_INIT_AUTOMAKE(netgen, 5.0)
+AM_INIT_AUTOMAKE(netgen, 4.9.2)
 
 AC_LANG_CPLUSPLUS
 AC_PROG_CXX
diff --git a/ng/Makefile.am b/ng/Makefile.am
index 5751fef7..30f9ebbf 100644
--- a/ng/Makefile.am
+++ b/ng/Makefile.am
@@ -2,13 +2,12 @@ INCLUDES = -I$(top_srcdir)/libsrc/include -I$(top_srcdir)/libsrc/interface
 METASOURCES = AUTO
 bin_PROGRAMS = netgen
 netgen_SOURCES = demoview.cpp ngappinit.cpp ngpkg.cpp onetcl.cpp
-netgen_LDADD = $(top_builddir)/libsrc/occ/libocc.a \
-	$(top_builddir)/libsrc/csg/libcsg.a $(top_builddir)/libsrc/geom2d/libgeom2d.a \
+netgen_LDADD = $(top_builddir)/libsrc/csg/libcsg.a \
+	$(top_builddir)/libsrc/general/libgeneral.a $(top_builddir)/libsrc/geom2d/libgeom2d.a \
+	$(top_builddir)/libsrc/gprim/libgprim.a $(top_builddir)/libsrc/interface/libinterface.a \
+	$(top_builddir)/libsrc/linalg/libla.a $(top_builddir)/libsrc/meshing/libmesh.a \
+	$(top_builddir)/libsrc/occ/libocc.a $(top_builddir)/libsrc/opti/libopti.a \
 	$(top_builddir)/libsrc/stlgeom/libstl.a $(top_builddir)/libsrc/visualization/libvisual.a \
-	$(top_builddir)/libsrc/interface/libinterface.a $(top_builddir)/libsrc/meshing/libmesh.a \
-	$(top_builddir)/libsrc/opti/libopti.a $(top_builddir)/libsrc/linalg/libla.a \
-	$(top_builddir)/libsrc/gprim/libgprim.a $(top_builddir)/libsrc/general/libgeneral.a -lTKSTL -lTKSTEP -lTKBRep \
-	-lTKIGES -L/usr/lib/tcl/Tix8.4.3 -L/usr/local/lib/Togl1.7 -lGLU -lTix8.4.3 \
-	-lTogl1.7 -ltcl8.5 -ltk8.5
+	-L/usr/local/lib/Togl1.7 -lGLU -lTKBRep -lTKIGES -lTKSTEP -lTKSTL -lTogl1.7 -ltcl8.5 -ltk8.5
 
 AM_CXXFLAGS = -DOPENGL
diff --git a/ng/Makefile.in b/ng/Makefile.in
index 697370a8..669e061a 100644
--- a/ng/Makefile.in
+++ b/ng/Makefile.in
@@ -48,17 +48,17 @@ PROGRAMS = $(bin_PROGRAMS)
 am_netgen_OBJECTS = demoview.$(OBJEXT) ngappinit.$(OBJEXT) \
 	ngpkg.$(OBJEXT) onetcl.$(OBJEXT)
 netgen_OBJECTS = $(am_netgen_OBJECTS)
-netgen_DEPENDENCIES = $(top_builddir)/libsrc/occ/libocc.a \
-	$(top_builddir)/libsrc/csg/libcsg.a \
+netgen_DEPENDENCIES = $(top_builddir)/libsrc/csg/libcsg.a \
+	$(top_builddir)/libsrc/general/libgeneral.a \
 	$(top_builddir)/libsrc/geom2d/libgeom2d.a \
-	$(top_builddir)/libsrc/stlgeom/libstl.a \
-	$(top_builddir)/libsrc/visualization/libvisual.a \
-	$(top_builddir)/libsrc/interface/libinterface.a \
-	$(top_builddir)/libsrc/meshing/libmesh.a \
-	$(top_builddir)/libsrc/opti/libopti.a \
-	$(top_builddir)/libsrc/linalg/libla.a \
 	$(top_builddir)/libsrc/gprim/libgprim.a \
-	$(top_builddir)/libsrc/general/libgeneral.a
+	$(top_builddir)/libsrc/interface/libinterface.a \
+	$(top_builddir)/libsrc/linalg/libla.a \
+	$(top_builddir)/libsrc/meshing/libmesh.a \
+	$(top_builddir)/libsrc/occ/libocc.a \
+	$(top_builddir)/libsrc/opti/libopti.a \
+	$(top_builddir)/libsrc/stlgeom/libstl.a \
+	$(top_builddir)/libsrc/visualization/libvisual.a
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__depfiles_maybe = depfiles
@@ -194,14 +194,13 @@ top_srcdir = @top_srcdir@
 INCLUDES = -I$(top_srcdir)/libsrc/include -I$(top_srcdir)/libsrc/interface
 METASOURCES = AUTO
 netgen_SOURCES = demoview.cpp ngappinit.cpp ngpkg.cpp onetcl.cpp
-netgen_LDADD = $(top_builddir)/libsrc/occ/libocc.a \
-	$(top_builddir)/libsrc/csg/libcsg.a $(top_builddir)/libsrc/geom2d/libgeom2d.a \
+netgen_LDADD = $(top_builddir)/libsrc/csg/libcsg.a \
+	$(top_builddir)/libsrc/general/libgeneral.a $(top_builddir)/libsrc/geom2d/libgeom2d.a \
+	$(top_builddir)/libsrc/gprim/libgprim.a $(top_builddir)/libsrc/interface/libinterface.a \
+	$(top_builddir)/libsrc/linalg/libla.a $(top_builddir)/libsrc/meshing/libmesh.a \
+	$(top_builddir)/libsrc/occ/libocc.a $(top_builddir)/libsrc/opti/libopti.a \
 	$(top_builddir)/libsrc/stlgeom/libstl.a $(top_builddir)/libsrc/visualization/libvisual.a \
-	$(top_builddir)/libsrc/interface/libinterface.a $(top_builddir)/libsrc/meshing/libmesh.a \
-	$(top_builddir)/libsrc/opti/libopti.a $(top_builddir)/libsrc/linalg/libla.a \
-	$(top_builddir)/libsrc/gprim/libgprim.a $(top_builddir)/libsrc/general/libgeneral.a -lTKSTL -lTKSTEP -lTKBRep \
-	-lTKIGES -L/usr/lib/tcl/Tix8.4.3 -L/usr/local/lib/Togl1.7 -lGLU -lTix8.4.3 \
-	-lTogl1.7 -ltcl8.5 -ltk8.5
+	-L/usr/local/lib/Togl1.7 -lGLU -lTKBRep -lTKIGES -lTKSTEP -lTKSTL -lTogl1.7 -ltcl8.5 -ltk8.5
 
 AM_CXXFLAGS = -DOPENGL
 all: all-am
diff --git a/ng/onetcl.cpp b/ng/onetcl.cpp
index 149f9657..26e8ab19 100644
--- a/ng/onetcl.cpp
+++ b/ng/onetcl.cpp
@@ -1,6 +1,9 @@
 const char * ngscript[] = {
 "\n",\
 "\n",\
+"if {[catch {package require Tix }]} {\n",\
+"    puts \"cannot find package Tix\"\n",\
+"}\n",\
 "set userlevel 3\n",\
 "if { [Ng_GetCommandLineParameter expert]==\"defined\" } {\n",\
 "    set userlevel 3\n",\