I have seen this error messsage in my error.log file:
PHP Notice: Undefined offset: 1 in /usr/local/vufind/web/sys/SolrStats.php on line 194, referer: http://srvvufind/Record/234722
I have been testing Vufind with Google Chrome, Mozilla Firefox and Internet Explorer.
When I use IE as browser I have this error. Do you have this problem too?