My friend is hosting a server over Hamachi. Three other people are able to log in easily and play without a single problem. I managed to log in once and play for a while, and was actually able to log back in, but now it's back to the same old problem. I either stick at the "Logging In..." screen, or fall through the void with the contents of my inventory. Hamachi has "up" packet loss whenever I try and connect to the server host. I have re-installed Hamachi with clean settings several times with no success. Windows 8.1 x64, MC 1.7.10, CenturyLink internet.