After upgrading a working version of SS version 4.2.58 to version 4.2.64 I am unable to login to my machine. Most of the time I will not be able to CTRL+ALT+DEL, however if I do get into the prompt after entering user name and password it just locks up. Removing SS fixes this issue. Installing fresh with no config file SS will work great. It looks like it is the config file we use but why would it work with an older version?