We've setup a rollup question in Blogger Help Forum: Something Is Broken, and ask that you provide what you can, here or there.
- What is the URL of the blog, that's loading / redirecting?
- What are you doing when you see the message - logging in to your Blogger account, or loading your blog?
- Is your Blogger account based on GMail, or non GMail?
- Does your blog have any third party gadgets, loaded using "Add a gadget" in "Page Elements"?
- Can you please provide the complete and exact error message, and describe precisely where, in the display, you see the error message?