IE6 causes java.lang.ClassNotFoundException: javax.media.pm.PackageManager

Question

Guys,
I have an applet that simply plays a media file. Quite simple! It has been working fine for ages, but I recently upgraded to IE6, and BLAM! I now get this exception: java.lang.ClassNotFoundException: javax.media.pm.PackageManager
Of course, I have checked my classpath, and my path settings. I know that the classpath is fine, I can run JAVA JMStudio and it launches fine. The application runs OK as standalone. I can even debug the applet using JBuilder, and it works. As soon as I run it from IE6 - Nope.. Not working!
I wonder if anyone else has seen this? If I set the option to use the Sun JVM, the diagnostincs applet shows this:
JMF Diagnostics:
Java 1.1 compliant browser.....Maybe
JMF classes.....Not Found
but, if I set the option off, I get:
JMF Version... 2.1.1a
Win32 Build
Native Libraries Found
What is causing this difference? Is this even relevant? I have seen several other posts talking about a ClassNotFoundException but this is specific to IE6 (I think at least.) I will try and regress to 5.5 and keep you posted!
Steve

Answer 1

OK, Here is the deal..
Uninstall the JRE Plugin. (Delete the directory too)
Uninstall the JMF (Again, delete the dirs)
Remove any references to the JMF on the CLASSPATH
Reboot
Re-install the JRE Plug-in
Re-install the JMF.. Note: Make sure all options are checked when installing.
Reboot as requested .
Browse to: http://java.sun.com/products/java-media/jmf/2.1.1/jmfdiagnostics.html to test the installation.
Funilly, it all works now. The reason it did not work was due to the classpath being WRONG!!!
It now reads: C:\PROGRA~1\JMF21~1.1\lib\sound.jar;C:\PROGRA~1\JMF21~1.1\lib\jmf.jar;
BUT, I installed the JMF at: C:\Program Files\JMF2.1.1
Call me insane, but I do not have a clue why the paths do not match, but is solved my problem.
I am certain this clears several of the posts found on this Forum!!
Hope this helps you all..
Steve