Plugin could not be activated because it triggered a fatal error.

I apologise for the un-helpfull error message. Do you have a multisite installation? I know that these sort of messages pop up there because of a bug in WordPress Core.

Anyway, do you have access to the PHP logs of your site? A more specific message might have been entered there.

The plugin itself triggers errors on activation in three cases:

• if you try to activate it centrally it in a multsite installation. You must activate the plugin individually for each blog.
• if PHP is installed in a version < 5.3 – you ruled that out.
• if the database engine does not support InnoDB tables. Some old MySQL versions need these tables to be explicitely enabled.

Thank you very much for your help.

I think it must be the multisite issue as I have ruled out the other two. I don’t remember installing as a multisite but that is not to say I didn’t. Tech support suggested I uninstall multisote but I think this is a bit tricky for a novice. Is there another way?

How do I “activate the plugin individually for each blog”?

I doubt that you would install the multisite version accidentally. You can identify that if you look at the “My Sites” entry in the admin bar at the top of the screen. In a multisite installation, there will be more than one entry, and the first one is called “Network Admin”.

Do not click on the “Plugins” sub-entry there, but choose one of the blog names below, and select “Plugins” from the left-hand menu. If you activate the plugin from there, I would hope that the activation works.

If you do not have the “Network Admin” entry, you are not on multisite, and we’d have to look further for the source of the error. In this case, the PHP error log would be most helpfull.

I appear to have successfully uninstalled multisite and the plugin has now activated.

Many thanks for your help.

C

No probs. Have fun with the crosswords!