[Deceptor]

Assisted Animemike in installing Sphinx Search today and decided to install it myself - I got the same error when being redirected to search results (not the CMS). I've applied this fix which stops the error from occuring:
Open ./packages/vbsphinxsearch/coresearchcontroller.php
Go to line 611, which should be:

				$index[] = implode(", ", $sphinx_index['sphinxindices']);

Above this add:

				if ($sphinx_index['sphinxindices'] == NULL)
				{
					continue;
				}

Save and upload coresearchcontroller.php and the errors should go away