Trying to install the Twitter app

    Perch: 2.8.29, PHP: 5.4.42, MySQL: mysqlnd 5.0.10 - 20111026 - $Id: c85105d7c6f7d70d609bb4c000257868a40840ab $, with PDO
    Server OS: Linux, cgi-fcgi
    Installed apps: content (2.8.29), assets (2.8.29), categories (2.8.29), perch_blog (5.0), perch_events (1.9.2), perch_twitter (3.5.1)
    App runtimes: <?php $apps_list = array( 'content', 'categories', 'perch_blog', 'perch_events', 'perch_twitter', );
    PERCH_LOGINPATH: /perch
    PERCH_PATH: /var/sites/d/dacoder.uk/public_html/perch
    PERCH_CORE: /var/sites/d/dacoder.uk/public_html/perch/core
    PERCH_RESFILEPATH: /var/sites/d/dacoder.uk/public_html/perch/resources
    Image manipulation: GD
    PHP limits: Max upload 100M, Max POST 100M, Memory: 128M, Total max file upload: 100M
    F1: 2edba60ed1f613d6dd804feb202456a2
    Resource folder writeable: Yes
    DOCUMENT_ROOT: /var/sites/d/dacoder.uk/public_html
    HTTP_HOST: dacoder.uk
    REQUEST_URI: /perch/core/settings/diagnostics/
    SCRIPT_NAME: /perch/core/settings/diagnostics/index.php

I followed the installation guide here

I've tried twice - each time with same result

Yes, in the admin when I click on the Twitter app link at the following point in the instructions:

Once you have installed the app, log into the Perch admin. The Twitter app will show up as a new tab in the admin interface. Click this tab and when run for the first time the app should install adding to your database two tables – one for settings and the other to cache the Tweets.

From what I can see in phpMyAdmin all looks ok, in terms of what should have been added...

So this is happening on the Tweets tab, on both the Settings and the Scheduled tab this error does not show up. I don't know if that's relevant?

I've tried deleting the database tables but this makes no difference, the app simply creates them again and the error remains.

Ok so I set up the account via the settings tab, which has no errors. It all appears to authenticate but then nothing comes through on the Tweets tab, it just errors as above.

The Tweets tab/page was doing this before I setup the Twitter app link.

I would add that I've got other apps installed and they work just fine.