Hi, Please i had minecraft on my computer for a long time and i've loved it since 4 years but my computer was laggy while i was playing that's why we took my computer to get fixed and the man who fixed it deleted all the files and had just the good ones for the computer and minecraft and everything got deleted with it so i re-downloaded it but when i launch it... a small windows appears downloading/updating minecraft after a while it stops and says Minecraft Launcher: unable to update the Minecraft Game Launcher ... PLEASE HELP!!! i am the biggest minecraft fan ;-;