Error message when trying to publish post or save post in Blogger:
In compose mode:
"Post was not saved due to form errors"
Or, if in Edit HTML mode:
"Your posting cannot be accepted: Tag is not allowed: META"
If you copied and pasted from an email or the web, the problem is the formatting built into it from a word processor that Blogger is not designed to handle. Here is an easy solution that usually works.
An easy way to remove the special formatting is to copy and paste into Notepad first. Then copy and paste from Notepad into your blog post. Notepad creates a text that Blogger can easily deal with.