Hi guys,
it seems that some of you are experiencing error messages when extracting files from the last few days.
"The archive is either in unknown format or damaged."
Files are not damaged, the solution is to update your Winrar version to the last one or use another program like 7-Zip or The Unarchiver (for Mac users).
I'm using Winrar 5.10 (last one is 5.70) and have no issues.
I 'm not sure why this is happening, I think it's because of an update on my server. Anyway, from now on I'll use another way to rar files so everything should be back in order.