Java SE (Java Platform, Standard Edition)

Hi I am new to webstart, I have managed to write a simple application which when I load from a browser using webstart works fine.
But when I try to run a java quicktime player (using quicktime for java sdk) i have written I get the following error:

Exception in thread "javawsApplicationMain" java.lang.NoClassDefFoundError: quicktime/QTException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.continueLaunch(Unknown Source)
at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

The player works fine wen i execute it as an application but I get the above error when using webstart. I have Jared all the relevant class files and .mov files.

Can I run such an application using webstart? R am i missing something?

Any help will be greatly appriciated,
thanks
Donal.