I updated a scenario of mine. It altered the way that userData is read and used (which variables go where and so on). Since there still was playerdata from the previous version, it caused a null point error on the site. (This happened because one or two of the 'int's are used to determine what image to use. So there was obviously a bad value because of the re-arrangement.)
I would advise there be a way for publishers to reset userInfo or something, but in the mean time, I just deleted it and re-published.

