undefined symbol: xmlTextReaderSetup error in Plesk

A quick one, about an issue that appears after Plesk upgrade to 10.4 version on I686 CentOS or RedHat.

It seams libxml2.so is not ok for the new sw-engine, and after the upgrade, there is “Internal server error 500”
And typical error in the sw-wngine log:

/usr/bin/sw-engine-cgi: symbol lookup error: /usr/bin/sw-engine-cgi: undefined symbol: xmlTextReaderSetup

The soliton is to remove manually the ingine:

#rpm -qa | grep sw-en
sw-engine-2.3.1-201410061604.rhel5
#rpm -e sw-engine-2.3.1-201410061604.rhel5 –nodeps

Then download the appropriate one from http://autoinstall.plesk.com/

In my case it was:


#wget http://autoinstall.plesk.com/PSA_10.4.4/dist-rpm-RedHat-el5-i386/contrib/sw-engine-2.3-201111031617.rhel5.i386.rpm

Then you may need to fix some apache configuration issues:

#/usr/local/psa/admin/bin/websrvmng -av

That is all.

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Filed Under: Plesk Control PanelTutorials

Anthony Gee About the Author: Anthony G. is an IT specialist with more than 9 years of solid working experience in the Web Hosting industry. Currently works as server support administrator, involved in consultative discussions about Web Hosting and server administration. One of the first writers in the Onlinehowto.net website, now writing for Free Tutorials community - he is publishing tutorials and articles for the wide public, as well as specific technical solutions.

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