Roundcube displays no login password field

[onastvar]

I had to restart my server after power outage. Roundcube URL on any of my websites does not have login/password field (see image below)

I have CentOS 5.1 L.A.M.P. server with ISPConfig Version: 2.2.23 with Roundcube 0.2 Alpha (I've just re-installled 0.2 Alpha via ISPConfig update with a package file roundcubemail-0.2a.pkg) but I still have same problem.

Mail server works fine, I can use SquirrelMail webmail as well as Thunderbird to get my emails.  

Is there a way to fix this - Please advise?