[thunderclap82]

Originally Posted by kh99

That seems strange to me - why should something in a plugin affect code in index.php, and how is it even getting there? Maybe an include() or require() is loading the wrong file or something?

Does the same thing happen if you put some totally different code in the plugin?

I'm really not a programmer, just someone who can usually muddle his way through it. So I have no idea what else I can put in the plugin to test your idea.

I double checked with our host and this is what they said:

From the php code the plugin introduces, the following is causing the error:

$templatevalues['banner_rotator'] = $templater->render();

They asked me to double check the template code (I have) and it's the same as it is on the other site I run.