Updates Wont Download [Client]

Every time that there is an update required (has happened 3 times now), the client gives me the restart notification and then restarts fine and begins downloading the update. Once the update reaches 100% it stays there and dosent inform me the update is complete. After a while I get a box telling me the game needs to restart. Once it restarts the update bar stays at 0% and dosent move at all. To fix this in the past I have had to reinstall, but since it has happened three times now its starting to become quite irritating. So is there a fix for this or onyone else experiencing this issue? Any info would be helpful. Cheers