: [ERROR][http-4443-exec-3][util.plugin.AbstractPluginLoader] log():139 : java.lang.ClassCastException: org.apache.solr.schema.StrField cannot : be cast to org.apache.solr.schema.FieldType
This almost certainly inidcates a classloader issue - i suspect you have multiple solr related jars in various places, and the FieldType class instance found when StrField is loaded comes from a different (incompatible) jar. -Hoss
