: On my xml file the date is on this format:* 2010-07-31T13:37:35:999Z*
: Jul 28, 2010 11:40:44 PM org.apache.solr.common.SolrException log
: *SEVERE: org.apache.solr.common.SolrException: Invalid Date String:''*According to that error message, you are attempting to index a date field with a value that is an empty string, Ie... <field name="signupdate"></field> ...or perhaps... <field name="signupdate" /> (xml makes no distinction) -Hoss
