I installed version 4.0 of NWBC earlier this week. When I first opened the application, I was able to login to the system and it functioned correctly. I closed the application and attempted to relaunch. The system selection dialog displayed, I chose a system, provided my credentials, and clicked login. The login screen went blank and doesn't proceed. The top of the dialog reads Log on to 'my system'. I have multiple systems and receive the same error for each. The HTML version of NWBC continues to function correctly. I have re-installed NWBC several times; however, it does not resolve the problem. Any suggestions?