It looks like Recuva portable's link is down, trying to download from http://www.piriform.com/recuva/builds redirects to main page.
I can download ccleaner portable, but not Recuva. Could you please check it out? Thanks!
working now (for me at least).
I clicked on your link, that took me to the green download button for the Portable build, clicking that takes you to the "please wait, your download will start shortly", which it did.