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XF 1.4 Addon install page is blank

I am trying to install an addon to my forums but when I click "Install Add-on" it takes me to a white page, no comments in the source.

In Chrome console it says the page responded with the status of 500


XenForo moderator
Staff member
Has it ever worked?

You may want to contact your host as that suggests a server issue, specifically related to php-xml.

Tracy Perry

Well-known member
Depends on whether you are running CentOS, Debian/Ubuntu, etc. It also depends on if you are installing via repositories or compiling the code yourself.

Generally with Debian it's a simple matter of adding the DotDeb repository by adding
deb http://packages.dotdeb.org wheezy all
deb-src http://packages.dotdeb.org wheezy all
deb http://packages.dotdeb.org wheezy-php56 all
deb-src http://packages.dotdeb.org wheezy-php56 all
into your /etc/apt/sources.list then running aptitude update && aptitude safe-upgrade.