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this is another bx error code that has been associated with trying to add a gadget to one's Blogger.com blog. In this particular case the gadget was the "Adsense" gadget.

As I have said many times before - when these bx error codes have to do with adding the Adsense gadget, I have seen one of the Blogger.com employees post that the problem could lie in the fact that you haven't yet given Blogger.com permission to access your Adsense account.

You have to do that before you can add the Adsense via the "Add Gadgets" option.