I have a similar problem. There are two crude ways for the document to compile:
1. I've noticed that changing the style from "classic" to "casual" -- in Document/Configuration/Preamble -- allows it to compile. 2. commenting out the reference to the email (also in the preamble) does the trick too. This is enough for me for the time being; but I realise that it's not ideal: maybe you prefer the classic style and/or cannot make do without the e-mail field. I'd very much like to know of better solutions. I come up with my "solution" number 2 because pdflatex does compile a .tex exported by LyX -- after hitting enter a couple of times -- but, in the e-mail field, shows the e-mail you introduced prefixed with "magenta". That is, in my case: magentaman...@austrohungaro.com. A very cool bug :) There must be a semicolon missing somewhere... Manolo