400 error when search box includes just one set of quotes "

[AmandaUCSC]

OK, here's a weird problem. When I try to search using two set of quotes " " or "" or "words" I have no problems. But I forgot a set by accident earlier and wrote "words - which led to this error:

Apache_Solr_HttpTransportException
'400' Status: Bad Request

exception 'Apache_Solr_HttpTransportException' with message ''400' Status: Bad Request' in /var/www/vhosts/[domain]/omeka/plugins/SolrSearch/lib/solr-php-client/Service.php:338

Stack trace:
#0 /var/www/vhosts/[domain]/omeka/plugins/SolrSearch/lib/solr-php-client/Service.php(1176): Apache_Solr_Service->_sendRawGet('http://85.214.2...')
#1 /var/www/vhosts/[domain]/omeka/plugins/SolrSearch/controllers/ResultsController.php(100): Apache_Solr_Service->search('" AND public:"t...', 0, '25', Array)
#2 /var/www/vhosts/[domain]/omeka/plugins/SolrSearch/controllers/ResultsController.php(65): SolrSearch_ResultsController->_search(0, '25', true)
#3 /var/www/vhosts/[domain]/omeka/application/libraries/Zend/Controller/Action.php(516): SolrSearch_ResultsController->indexAction()
#4 /var/www/vhosts/[domain]/omeka/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('indexAction')
#5 /var/www/vhosts/[domain]/omeka/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#6 /var/www/vhosts/[domain]/omeka/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#7 /var/www/vhosts/[domain]/omeka/application/libraries/Zend/Application.php(382): Zend_Application_Bootstrap_Bootstrap->run()
#8 /var/www/vhosts/[domain]/omeka/application/libraries/Omeka/Application.php(79): Zend_Application->run()
#9 /var/www/vhosts/[domain]/omeka/index.php(23): Omeka_Application->run()
#10 {main}

I have not changed anything. Per the other message I posted on here last week, this is the code I was given for the latest version of the plug-in. I simply overwrote the old version.