This means you need to change your YVD settings to only be ran by the Administrator of the Computer. This is done by finding YVD in the programs list, and looking for the options or whatever. I'm sure you can find it.
this happened to me i had to uninstall and reinstall
Delete your set file then re download the set file from xerocreative and put it where your set file was in the first place. That is what I had to do a while ago.