diff -Nru inventor-2.1.5-10/debian/patches/add-required-libs.patch inventor-2.1.5-10/debian/patches/add-required-libs.patch
--- inventor-2.1.5-10/debian/patches/add-required-libs.patch	2011-09-25 05:15:31.000000000 +0200
+++ inventor-2.1.5-10/debian/patches/add-required-libs.patch	2013-08-04 13:34:31.000000000 +0200
@@ -2,15 +2,19 @@
  Add common libraries required now that ld is
  "improved" and no longer finds symbols in
  shared libs linked to shared libs.
+ .
+ Update: link -lXm before -lXt to fix X Error of failed request:
+ BadWindow (invalid Window parameter) when running ivview.
 Author: Steve M. Robbins <smr@debian.org>
-
+Author: Graham Inggs <graham@nerve.org.za>
+Last-Update: 2013-08-04
 --- inventor-2.1.5-10.orig/make/ivcommondefs
 +++ inventor-2.1.5-10/make/ivcommondefs
 @@ -92,6 +92,7 @@
  LDDSOOPTS += -L$(X11LIBDIR)
  LDOPTS += -L$(X11LIBDIR)
  
-+LLDLIBSCOMMON = -lXt -lGLw -lGL -lXm -lX11
++LLDLIBSCOMMON = -lXm -lXt -lGLw -lGL -lX11
  endif