Can't get Thaw working

I need to use Thaw, which uses the Freenet network, to download. I followed the instructions here: http://freenetproject.org/thaw.html

Before clicking "download," I right click on the link of the file I want and copy the link address (the key). Then I paste the key into Thaw's download window an click "download," as specified by the instructions at http://freenetproject.org/thaw.html

I receive the following error message:
Attachment 88555

I've Googled this to no avail and have no idea what's wrong. I'm using Windows 7 and am accessing Freenet in my Google Chrome browser.

Any help is greatly appreciated!