[tam10]

Zebu, i have the same issue since upgrading to 4.5.x
with links that do not exist for 3 or more years suddenly came to live in Google webmaster errors.

I do not understand much, but for some reason i suspect it has to do with xcart and not with cdseo.

How can Google or cdseo find the links and files if they have been deleted???
For example, i deleted few old static pages, and the day after i found half of them in the skin/common files...

In any case i gave up and just ignore them, as i couldn't fins anyone to find the solution.