Having the same issue:
Sometimes after entering log in info the client crashes to desktop
other times I get System Error and stay at log in.
Sometimes the account log ins work...
For example, I have 3 random accounts I made, Ill get in with 1, see its the wrong accnt, log out, and try the next one, doesnt work, try to log back into the one that just worked and ill get 1 of the 2 errors.
Made a brand new account, same issue.
Did step 1
On step 2 it returns telenet is not a recognized command.