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Plesk fails to start after reverting from server backup

Ray_Ansari

New Pleskian
I was trying to install plesk 12 from v10.4 and encountered some errors. I decided to restore a backup from Evault that I made right before starting the upgrade process. To my surprise, after restoring the backup plesk stopped working. All the sites are working on the server, except the plesk panel login page returns an internal 500 error, and here is the output from the error log:
/usr/bin/sw-engine-cgi: symbol lookup error: /usr/lib64/sw/librdbmspp.so.2: undefined symbol: _ZN5boost6system16generic_categoryEv
2014-12-07 10:01:04: (mod_fastcgi.c.1000) the fastcgi-backend /usr/bin/sw-engine-cgi -c /usr/local/psa/admin/conf/php.ini -d auto_prepend_file=auth.php3 -u psaadm failed to start:
2014-12-07 10:01:04: (mod_fastcgi.c.1004) child exited with status 127 /usr/bin/sw-engine-cgi -c /usr/local/psa/admin/conf/php.ini -d auto_prepend_file=auth.php3 -u psaadm
2014-12-07 10:01:04: (mod_fastcgi.c.1007) if you try do run PHP as FastCGI backend make sure you use the FastCGI enabled version.
You can find out if it is the right one by executing 'php -v' and it should display '(cgi-fcgi)' in the output, NOT (cgi) NOR (cli)
For more information check http://www.lighttpd.net/documentation/fastcgi.html#preparing-php-as-a-fastcgi-program
2014-12-07 10:01:04: (mod_fastcgi.c.1012) If this is PHP on Gentoo add fastcgi to the USE flags
2014-12-07 10:01:04: (mod_fastcgi.c.1105) [ERROR]: spawning fcgi failed.



I checked the php version:
php -v
PHP Warning: Module 'ionCube Loader' already loaded in Unknown on line 0
The ionCube PHP Loader is disabled because of startup problems.
PHP 5.3.3 (cli) (built: Jun 27 2012 12:25:48)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
with the ionCube PHP Loader v4.0.7, Copyright (c) 2002-2011, by ionCube Ltd., and


Any ideas?
 
As suggested in another thread I already checked directory permissions using chmod 4710 /usr/lib64/sw-cp-server/sw-suexec

I am running Centos 5
 
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