Can't import a cert

I can not import a certificate.

Each time I hit the following:

Objects->Cryto Config->Crypto Cert->Select the cert
Click Upload and then select Java Key Store (in another window), I get the following error:

java.lang.ClassFormatError: Incompatible magic value 1010792557 in class file ExtractKeyApplet
   at java.lang.ClassLoader.defineClass1(Native Method)
   at java.lang.ClassLoader.defineClassCond(Unknown Source)
   at java.lang.ClassLoader.defineClass(Unknown Source)
   at java.security.SecureClassLoader.defineClass(Unknown Source)
   at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
   at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)

Popup message is the following:
You can't upload from a Java Key Store unless Java is enabled in your browser and an applet from teh device is trusted.

Note: most times I bring up the browser pointing to Data Power I have to override the 'exception'. Also there is a 'Certificate Error' on the top of my browser in red. Don't know if this has something to do with it.

thanks,

Bob