'The Compressed (zipped) Folder is invalid or corrupted'

Some people have reported problems downloading releases from the Workspaces application;
either they find a 0 byte file, or are presented with the message 'The Compressed
(zipped) Folder is invalid or corrupted'. Either way, not fun.

From the list of late-breaking

On downloading a release, the error message "The Compressed (zipped) Folder is
invalid or corrupted." is shown

This corresponds to a known problem in the way Internet Explorer downloads compressed
files. For more information, see KB
. As suggested in that article, this problem can be worked around by first
saving the compressed folder to disk, and opening the release from the saved location.

So, the KB has background and the workaround is to save to disk. What if you never
have that option? You may have (inadvertantly) configured your machine to always open
ZIP files, without asking you first. To fix this, open up any Windows Explorer window,
Tools/Folder Options, then on the File Types tab find ZIP files and click Advanced.
Finally, make sure the 'Confirm open after download' box is checked.

All fixed.