this short discussion, http://support.mozilla.org/en-US/questions/793173#answer-154842
it would seem that Redbox wants you to upgrade your browser, but details are slim so I can't offer any more than that.
Mark
I recently did a system recovery on my hp vista 64 bit pc, well everything went well with the exception everytime I go on Redbox ( movie rental ) I get a unknown api error. Does anyone know what this is and how to fix it?

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