Error downloading file - Generic Failure!? What the hell is this

I uploaded this thing: http://steamcommunity.com/sharedfiles/filedetails/?id=214751523
First, GMOD didn’t downloaded with this message: Transferred 0 B (0) in 10 secondsSecond, After several hours It started download and I GOT THIS ERROR: Error downloading file - Generic Failure!?

What the hell is Generic Failure?



mapps/common/GarrysMod/garrysmod/addons/enhanced_citizens_-_localized_rebels_178599609.gma)
END: DownloadAddons
Dopwnload Finished
Error downloading file - Generic Failure!?


This has been an issue for the longest time; addons randomly fail to download.

The problem is, Addon downloading is not working with 10+ re-upload attempts.
This thing driving me really mad.