File size limit error when linking to external page

Hi,

Suddenly, one of my clients - who manages one section of a large site with Ct5 - gets the following error when simply trying to link to another page on the same site (but outside of her departments site directory).

"You can't select this file because it exceeds the file size limit set by the website administrator. Please select a file under 300 kilobytes."

Of course, this is not a file she's trying to link to and besides, the page she's trying to link to is only about 16k. Also, she has no problem linking to other, external sites.

Could this be a permissions issues of some kind?

Thanks for any help.

Scotch