Plesk 11.x / Windows :: Cannot Create New Domains PHP Not Installed

I have a dedicated server here in the UK with fasthosts (win 2008 server, IIS 7), which which has been running fine for nearly a year. it was running plesk 9.2, and then out of the blue it got errors creating a new domain saying that PHP wasn't installed.

PHP was/is installed on the server, and is still running fine within my 12+ domains/websites. at the point of the error it was running 5.3.8 - i had manually upgraded the version outside of Plesk, but it had seen the new version when installing new domains.

When Plesk stopped seeing that PHP was installed, my hosts asked me to upgrade Plesk, as it would solve the issue. I used that ai.exe program, and choose v11.

The control panel installed OK - but I did lose my websites for a while, due to it downgrading my PHP to v5.2, and installing an older MySQL version which tried to use the same ports etc (I also have manually installed mysql v5.5 and have 1gig databases in that installation!).

After chosing the upgrade to 5.3 option in the Plesk control panel, and turning the Plesk installed Mysql v5.1 service off and to disabled in windows services - 'revealing' my 5.5 version, I could at least get my websites up and running once again!

Once all those were running (the priority), I have found that v11 Plesk has the same problem as v9.2, namely that it doesn't think that PHP is installed and available.

The error on installing a new domain;

Error: Failed domain creation: Unable to update domain data: Execute websrvmng --add-domain "--domain-name=testkrispy.co.uk" failed with error code 1: PHP 5 is not installed

Oddly it does see PHP 5.3.15 in the Service components screen, and it's ticked 'green' in that page, so all looks well.

On trying to install a new domain using plesk I get this;

And also on pages such as webmail - it also shows 'PHP not installed' against those webmail clients which would need PHP to run.

Any way to 'force' Plesk to see that the PHP 5.3.15 version that it itself installed (and I've removed the component and re-installed using Plesk).

My list on the server components page;

ASP 7.0.6002.18276
ASP.NET 2.0.50727.4016
FastCGI Support 7.0.6002.22343
Perl v5.10.1 built for MSWin32-x86-multi-thread
PHP 5.3.15
Python 2.6.5.12
SSI 7.0.6001.18000

I've tried something found on this forum (under the 10.4 area), but that hasn't fixed it;

"C:ParallelsInstallerparallelsPANEL-WIN_11.0.9dist-msi-Microsoft-2003-i386php53.msi" you will have an option for "repair" - ran that, no difference.

So as it stands, Plesk 11 is running, and most functions work, it just doesn't recognise the PHP install that it put in place... so I can't add software which requires PHP through Plesk, nor add new domains. All existing domains are running and using PHP fine - so it's installed OK.

One error I've noticed on startup - within the PHP error log, is the following - which I'm guessing is coming from the Plesk's own PHP executable (I can see it uses a 5.3.10 version in it's own admin area, with an extended php.ini file? ) I'm guessing the plesk's php.ini extension is trying to double load some dlls (which isn't a problem?) but seems to not find the php_sockets.dll - although that file is in the directory specified!? If it's a php dll around network sockets, maybe it is trying to use those to communicate with a running php instance? (Just guessing here?)

[30-Jul-2012 15:56:42 UTC] PHP Warning: Module 'mbstring' already loaded in Unknown on line 0
[30-Jul-2012 15:56:43 UTC] PHP Warning: Module 'mysql' already loaded in Unknown on line 0
[30-Jul-2012 15:56:43 UTC] PHP Warning: Module 'mysqli' already loaded in Unknown on line 0
[30-Jul-2012 15:56:44 UTC] PHP Warning: Module 'pdo_mysql' already loaded in Unknown on line 0
[30-Jul-2012 15:56:44 UTC] PHP Warning: Module 'pdo_sqlite' already loaded in Unknown on line 0
[30-Jul-2012 15:56:44 UTC] PHP Warning: PHP Startup: Unable to load dynamic library 'C:pleskAdditionalPleskPHP53extphp_sockets.dll' - The specified procedure could not be found. in Unknown on line 0