[Typo3] indexed_search: weird malfunction (help!!)

[Paul V]

Hi,

I'm working on a TemplaVoila site on 3.8 with the latest indexed_search on a 
Linux box.  For some reason, not only does the indexed_search plugin not 
work, it also interferes with page generation on the page the plugin is 
inserted:

http://qedst-43567-001.dsvr.co.uk/gilliebolton.com/search/

(pages should look like: 
http://qedst-43567-001.dsvr.co.uk/gilliebolton.com/)

 - you can see that the default page head stuff is not being loaded in.  The 
indexing IS working, however, and the default indexed_search CSS is being 
inserted (which you can see in the source) - but no plugin.

Anyone got any ideas why my search plugin is not working?  I'm using an 
identical setup on a Windows server with not problem at all.

Thanks!!