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Applet works with IE8 but aborts with Firefox 3.6.3

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This link starts an Applet (a funny St.Valentine's one) that works perfect with IE8. Same link does some initial steps from Firefox 3.6.3 but aborts. Looking into Java Console it errors with ... but as I said, it works PERFECT with IE8!!! What's the problem with Firefox? Of course, Applets are activated in my Firefox: Tools/Add-ons/Plugins/JavaPlatform ... 6.0.200.2 Note: Other Applets of my own work fine, as expected.

This link starts an Applet (a funny St.Valentine's one) that works perfect with IE8. Same link does some initial steps from Firefox 3.6.3 but aborts. Looking into Java Console it errors with ... but as I said, it works PERFECT with IE8!!! What's the problem with Firefox? Of course, Applets are activated in my Firefox: Tools/Add-ons/Plugins/JavaPlatform ... 6.0.200.2 Note: Other Applets of my own work fine, as expected.

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Sorry, but I don't know why my previous post OMMITTED the linkand the error I was providing!

The link I mentioned was: St.Valentine'Applet

and the error I've seen in the Java Console: Uncaught exception: string contains an invalid character

BUT it works with IE8 and aborts with Firefox!