ackelito

I need assistance on this, im getting an error saying : "Failed to retreive file /.a3s/sync" "File not found in repository: http://a3cdn.com:80/arma3sync/.a3s/sync".I cant do anything. It comes up when i press check for addons. Anyone has had any similar problem that might be able to help? Right now the website is down, so can that be a factor in this issue?