Malwarebytes' Anti-Malware is updated via the program itself not by going to their website. Open the program, go to the update tab, click the Check for Updates button. If there are updates they will be downloaded and installed, if there are no updates you will receive a message that you have the latest version.
No where in this thread did you previously post anything about constantly receiving this message;
"Windows Registry Recovery. One of the files containing system Registry data had to be recovered by use of a log or alternate copy. The recovery was successful."
Do you have an operating system reinstall disk? There is a good chance that by incorrectly doing the registry edit that you have damaged key files and this is why you are receiving this message.