Theme developer module crashes the whole site when enabled, how to fix? I'm working on a clean Drupal 7.x installation, downloaded Theme developer and its dependent module simplehtmldom API( another required module for Theme developer) using drush. 

I found out that simplehtmldom 7.x-2.x is incompatible; so I removed it, and  Installed  the 7.x-1.12 version using Drush, enabled it, enabled the Theme developer module was available to be enabled. Now the site doesn't work anymore.

All I'm seeing is just some tags like this.

&lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt; &lt; /&gt;


The problem is fixed when I disable the Theme developer module manually with Drush; everything gets back to normal, when I disabled that module.

I've tried to navigate the site using /node/1 and tried to go to the administration panel; all I noticed is that the title of the page (the one appearing on the browser's tab) appears but the content seems to be the same.

How do I solve this issue?

This is a screenshot.
I did manage to get it to work properly … eventually. This is how, on D7 7.5.


Download and install Theme Developer 7x. Do not enable yet. 
Download and install SimpleHTMLDom  7.x-1.12. Do not enable yet.
Download SimpleHTMLDom library from
http://sourceforge.net/projects/simplehtmldom]1 and install to
sites/all/libraries, so that your library path is
sites/all/libraries/simplehtmldom/simple_html_dom.php.
Now you can run drush en -y devel_themer and it will automatically
enable the simplehtmldom.


I did notice that my /tmp folder was not giving correct permissions to the /tmp/devel_themer folder, so doing a chmod -R on that fixed the problem.