Not sure, but maybe you have jars with ES classes in the plugins folder that went astray?
IIRC I saw these kind of errors and it was a plugin with dependencies that were not compatible. If that is your code you can hack on, last resort is printing the current classpath in the log file... Jörg -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoHA5QW2C4R_XQNc26PcxAuGgB_%2BR7ii3f_r3iEmeim88g%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.