blank identities page

[fede]

Hi all,
I got two problems with my custom RC install:
-I'm getting a blank page when I go to the identities tab.
(but I can see it without problem from my Host's CPanel Roundcube.)

-I cannot change password with plugin. It says 'could not save password'

Hope someone can help me.
Thanks!

[fede]

Update:
Password change actually works ! . But it keeps saying 'could not save new password'...

Identities tab is still a blank page.