What Happens AFTER You Report Your BX Error Code To Blogger.com?
If you continue to get the error code then you should report it to Blogger.com via the form that they have specifically set aside for reporting bx error code problems. You can find a link to this form by going to the Blogger Help Groups page and clicking on the blue "Resource" link which is on the right side of the page. Once you click that link, scroll down to the bottom of the page and you will see the link to report your bx error code problem.
Unfortunately when people post about them getting the bx error code screen there is not generally a quick fix for it. Blogger.com have to be aware of the error code before they can start work on solving / fixing it.
Don't assume that someone else has reported the error code. If you are unsure then report it to Blogger.com via the instructions above.
And when you do post about it please don't expect a quick fix right away. There have been some bx error code problems that have been reported and there were immediate fixes for them but that doesn't happen for the majority of bx error codes that have been reported.
The Blogger.com staff / team have to work on solving the error code first and that may take some time.