Problem 1. Its trying to locate 'SimplePie.php' which doesn't exist (/saphire/thirdparty/simplepie/)
Problem 2. The other file its trying to include is SimplePie.inc (actually simplepie.inc) - have changed, but now get this:
[22-Aug-2011 12:41:45] Error at sapphire/core/Object.php line 724: Uncaught Exception: Object->__call(): the method 'versionfromversionfile' does not exist on 'Updates' (http://ppmbs.co.uk/admin/dashboard/)
/admin/dashboard/ also gives the same error:
[User Error] Uncaught Exception: Object->__call(): the method 'versionfromversionfile' does not exist on 'Updates'
Line 724 in /home/sites/ppmbs.co.uk/public_html/sapphire/core/Object.php