I have recently converted from our WLSE to WCS (Version 4.1). I also upgraded to the Linux 4.0 version. I am able to log into the Linux console with the root account without any problems. However, I'm not able to access the WCS Web GUI. During the conversion, the documentation says you will be prompted for operating system password (Linux), WCS Root User password (WCS GUI), and FTP password.
I was only prompted for the Linux password and can now not access the Web GUI. There was a similar post to this, but no answer was provided.