I appear to have an issue with the autoloader - and I don't know if it's the template that has triggered it, or something else.

When I've tried to add some of the new plugins for 1.5.7 over the last 4 weeks, all that require an autoloader file to trigger them to show up on my website, whether admin or shop side, are not working.

My template is Westminster_new 2.1 that I updated over Christmas, with some colour tweaks made by me.

I'm totally confuzzled as all the forums relating to the plugins are showing that this isn't a general issue... so I'm, obviously special!

All plugins that don't require an autoloader file are working fine.

Suggestions of where I start the Autopsy Process...?

TIA
Tarn :-)