Get Invalid ClickOnce zip file when publishing download.

Apr 5, 2013 at 1:51 PM
I am trying to upload a clickonce package to my project downloads but I am getting the following error:
Invalid ClickOnce zip file. Please specify a valid installation folder URL
(https://projectname.codeplex.com/releases/clickonce/).
Now I get the reason, my application manifest points to http:// not https:// however this is the first time I have had the problem and have done six previous releases without issue. Is this a known intermittent issue or has something changed?