WP v 3.2.1
Firefox v 6.0 & also tried it on Chrome v 13.0.782.218
Mac OSX 10.6.8
Theme twenty ten (modified), I have also tried in on twenty eleven (unmodified)
when I try & attach any media from media library into posts/pages I get an error.
I can select the media from the media library, eg:
add an image > media library > show
When I click the "insert into past" button I the pop-up redirects to a 404 page which displays the active theme :
Apologies, but the page you requested could not be found. Perhaps searching will help."
I have already installed the hotfix plugin, but that doesn't help.
I don't have any plugins active & it still happens.
Any thoughts & advice appreciated.