Darth Kenobi, please post your Operation System and Internet Browser and version. You can try this before though, it may work. If you use Internet Explorer:
Go to Tools -> Internet Options
In the middle of the window that appears, press "Delete Files". You will be asked to confirm this. After this is complete, below that, choose "Clear History". When that is complete, shut your machine off completely. Turn it back on, open up your browser and try again. If it does not fix this error, try the encoding a few times. I have found that to work when this happened to me the one time that it did. Good Luck!