Originally Posted by john_es
The error that occurs says:
This page contains the following errors:
error on line 11 at column 99: Opening and ending tag mismatch.
Below is a rendering of the page up to the first error.
After that, the book looks intact.
So.. switch to Codeview and figure out WHICH tag at or above line 11 is mis-matched and fix it .
BTW line 11 is almost always a header line (before <body>)