Why can't this java applet load in firefox

I've tried everything, I hope someone here can help.

Java is enabled in firefox. I can run nearly every other java applet. This one doesn't load:

http://applet.efxnow.com/STAT_sys/FXGUI.html

I know it uses swing components. I've loaded the japplet class independently, to no avail. I'm not sure why it runs in IE6 and IE7 but not firefox.

How do you debug this? Where do applet loading error messages go? Is there a console or log I can tail?

[479 byte] By [Inkaa] at [2007-11-26 17:47:56]
# 1
See Part IV of this document http://java.sun.com/javase/6/docs/technotes/guides/plugin/developer_guide/contents.html
ChuckBinga at 2007-7-9 5:00:16 > top of Java-index,Desktop,Runtime Environment...
# 2

Regrettably, this approach does not work. Java is never getting invoked as the browser is thinking it is not installed. As I mentioned, java is installed and many other non-swing apps run well on firefox. Nothing shows up in firefox's error console.

I would greatly appreciate some other suggestions.

Inkaa at 2007-7-9 5:00:16 > top of Java-index,Desktop,Runtime Environment...
# 3
It's not clear from your posts so far, so I'll start from the basics. Does the java plugin show up when you go to the 'about:plugins' page in firefox? If not, see http://www.mozilla.org/support/firefox/faq#q2.2 for instructions on enabling it.
jxca at 2007-7-9 5:00:16 > top of Java-index,Desktop,Runtime Environment...
# 4
I assume from your post that you've clicked on the link in my original post and that the applet opened for you in firefox. If that's so I'd love to know what you did. Here are my java plugins: http://indigofund.com/Charts/2007-02/jplugins.pngnull
Inkaa at 2007-7-9 5:00:16 > top of Java-index,Desktop,Runtime Environment...
# 5

I saved a copy of your FXGUI.html page and within the <embed> tag changed this line

type="application/x-java-applet;version=1.4.2_08"

to this

type="application/x-java-applet"

(i.e., removed the version=...). (I also added a <base href="..."> tag to the header so I could load your classes since I can't put my page on your server :-)).

After that the applet loaded in firefox (running on linux, FWIW). It also worked when I used this line

type="application/x-java-applet;version=1.4.2"

Note that I don't have the 1.4.2_08 plugin installed; I have 1.5.0_09. So the version string seems like the problem; I don't know the correct syntax for including the 'update number' in the version string. Hopefully the docs cited above can help.

jxca at 2007-7-9 5:00:16 > top of Java-index,Desktop,Runtime Environment...
# 6
Yes, you solved it! A million thanks. BTW, the vendor did not know how to solve this. Bravo to you.
Inkaa at 2007-7-9 5:00:16 > top of Java-index,Desktop,Runtime Environment...