Re: Another Site Not Verified

It sounds like you've verified at the subdirectory level rather than at
the root. If you verify at the subdirectory level, we show you error
information for that subdirectory, but in order to see many stats, you
need to verify at the root. You can do this by placing the requested
verification file in the root directory and then clicking Check Status.

Since you've already verified at the subdirectory level, you're getting
the message that we couldn't find your verification file because we're
looking for it at the root level.

If you are unable to upload a file at the root level, you can still
view error information for the subdirectory at which you've verified.
You can read more about this process here:
http://www.google.com/webmasters/sitemaps/docs/en/verify.html#verifysubsite