Hi,
I get this error when I want to install any of the appliances. Almost 2 days searching kb and forums and I tried a lot: no firewall active, setting file access, ...
This command from the kb:
gives:
FILE_PATH: /Users/johan/appliances.xml
FILE_SIZE: 0
PROGRESS: 0
DOWNLOADED_BYTES: 125745
Unable to connect to the Parallels Update site.
I copied http://download.parallels.com/desktop/v10/appliances.xml (URL in browser and save as) manually in my userdir but didn't fix the problem.
(also tried v11 because the trial is v11 but no luck)
I installed the trail version for Mac and was't exception this problem 
Please advice.
Thx!
Johan