The OPEN IFC TOOLS Viewer requires Java3D version 1.5. and Java JRE 1.6. If you are using Mac OS X, it is possible that an older version of Java3D is already installed. For an unknown reason, Mac OS X ignores a newer Version of Java3D that is delivered with the provided Java Web Start. In this case, you have to fix this problem on your local machine manually!

There are two options to fix the problem:

1. •Login as root
   

2. •Delete the old Java3D files (see option 1)
   

3. •Download the latest Java3D and JOGL files:
   

        Java3D API:

1. ‣j3dcore.jar
   

2. ‣j3dutils.jar
   

3. ‣vecmath.jar
   

        Java Bindings for OpenGL (JOGL):

1. ‣jogl.jar
   

2. ‣gluegen-rt.jar
   

              native files i386 and x86_64 architecture:

1. ‣jogl-natives-macosx-universal.jar
   

2. ‣gluegen-rt-natives-macosx-universal.jar
   

               native files ppc architecture:

1. ‣jogl-natives-macosx-ppc.jar
   

2. ‣gluegen-rt-natives-macosx-ppc.jar
   

3. 
   

4. •Extract the native JAR-files, using a file archive program (e.g. the default ZIP built-in) into  a temporary directory
   

5. •Go To the following directory: "System/Library/Java/Extensions"
   

6. •Copy the downloaded Java3D and JOGL files as well as the extracted native files from your temporary directory  into this system folder. The files to copy are: j3dcore.jar, j3dutils.jar, vecmath.jar, gluegen-rt.jar, jogl.jar, libgluegen-rt.jnilib, libjogl.jnilib, libjogl_awt.jnilib, libjogl_cg.jnilib
   

7. •Now the OPEN IFC TOOLS Viewer Java Web Start should use the installed Java3D libraries from your local machine