Cannot authorized on the Webmail page (Horde, Atmail)

[Alexander S]

I have a problem with Webmail.
When I am trying to authorized on the Webmail page nothing happens, after Login I see the same page with blank fields (username and password).
In logs I didn't see any problems:
Nov 24 14:22:37 HORDE [notice] [imp] Login success for [email protected] [77.95.xxx.x] to {localhost:110 [pop3/notls]} [pid 5072 on line 323 of "D:\Inetpub\vhosts\webmail\horde\imp\lib\session.php"]

I think it's gone after I installed PHP 5.3 on my Server with Plesk Panel.
But I cannot find how to fix it:-(

 

[Alexander S]

Tried to Install SaaS Application for Webmail: XandMailWeb2cs V4 for Plesk Panel
and received error:
"The app requires PHP 4.3.9 or later. Currently, you have PHP none. If the version is "none", ensure that the PHP support is selected for the domain."
Where I can find a settings for PHP in Plesk Panel?

 

[Alexander S]

After Updated Plesk to 10.4.4 Atmail and MailEnable Web Client started working properly.