Infinite Loading Screen

So I have downloaded fsod a few times because of this reason, and I have no clue how to fix it. And its just my character walking. It happens completely randomly, and the only way I have found out how to fix it is to reinstall it. If the source is corrupted or something, can someone recommend me one?

Have you changed both ips in server.cfg to localhost if you are using it. Also, have you made sure your rebuild doesn't have any errors? Firewall disabled? Client configured? Localhost or Port Forward/Hamachi. What error does it show when you try load into nexus? (on wserver.exe)