To attend the University you have to wait a couple days (cant remember if it's a specific day of the week) then try going to it's location on the map early in the morning around 6.
I am also having the same issue as this person was, and I have done what you said, but the location never pops up on the map, and I have gotten stuck on all the other stuff and don't want to just go around aimlessly forever incapable of progressing anything.
