XML Filter Logstash 1.5.1

Hey Guys,

Has anybody got the XML filter working under Logstash 1.5.2. The init of the filter seems to work fine however when a event come through Logstash crashes with the following exception:

NokogiriDomParser.java:77:in `initialize': java.lang.NoSuchMethodError: nokogiri.internals.NokogiriDomParser.getXMLParserConfiguration()Lorg/apache/xerces/xni/parser/XMLParserConfiguration;
    from NokogiriDomParser.java:69:in `<init>'
    from XmlDomParserContext.java:114:in `initParser'
    from XmlDomParserContext.java:97:in `<init>'
    from XmlDocument.java:327:in `newFromData'
    from XmlDocument.java:344:in `read_memory'
    from XmlDocument$INVOKER$s$0$0$read_memory.gen:-1:in `call'
    from CachingCallSite.java:296:in `cacheAndCall'
    from CachingCallSite.java:72:in `call'
    from FCallManyArgsNode.java:60:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from IfNode.java:118:in `interpret'
    from LocalAsgnNode.java:123:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from ASTInterpreter.java:74:in `INTERPRET_METHOD'
    from InterpretedMethod.java:112:in `call'
    from DefaultMethod.java:169:in `call'
    from CachingCallSite.java:286:in `cacheAndCall'
    from CachingCallSite.java:81:in `callBlock'
    from CachingCallSite.java:85:in `call'
    from CallManyArgsBlockPassNode.java:57:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from ASTInterpreter.java:74:in `INTERPRET_METHOD'
    from InterpretedMethod.java:268:in `call'
    from DefaultMethod.java:235:in `call'
    from CachingCallSite.java:366:in `cacheAndCall'
    from CachingCallSite.java:238:in `call'
    from CallThreeArgNode.java:61:in `interpret'
    from LocalAsgnNode.java:123:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from RescueNode.java:221:in `executeBody'
    from RescueNode.java:116:in `interpret'
    from BeginNode.java:83:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from IfNode.java:116:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from ASTInterpreter.java:74:in `INTERPRET_METHOD'
    from InterpretedMethod.java:204:in `call'
    from DefaultMethod.java:211:in `call'
    from CachingCallSite.java:336:in `cacheAndCall'
    from CachingCallSite.java:179:in `callBlock'
    from CachingCallSite.java:188:in `callIter'
    from /data/operations/logstash/logstash-1.5.1/vendor/bundle/jruby/1.9/gems/logstash-core-1.5.1-java/lib/logstash/filters/base.rb:162:in `block_0$RUBY$__file__'
    from rubyjit$LogStash::Filters::Base$$multi_filter_23dd53ffcf01f316bd396c1ca6264acc7395c01f$block_0$RUBY$__file__:-1:in `call'
    from CompiledBlock19.java:135:in `yield'
    from Block.java:142:in `yield'
    from RubyArray.java:1606:in `eachCommon'
    from RubyArray.java:1613:in `each'
    from RubyArray$INVOKER$i$0$0$each.gen:-1:in `call'
    from CachingCallSite.java:143:in `callBlock'
    from CachingCallSite.java:154:in `callIter'
    from /data/operations/logstash/logstash-1.5.1/vendor/bundle/jruby/1.9/gems/logstash-core-1.5.1-java/lib/logstash/filters/base.rb:159:in `__file__'
    from /data/operations/logstash/logstash-1.5.1/vendor/bundle/jruby/1.9/gems/logstash-core-1.5.1-java/lib/logstash/filters/base.rb:-1:in `__file__'
    from JittedMethod.java:181:in `call'
    from CachingCallSite.java:168:in `call'
    from CallOneArgNode.java:57:in `interpret'
    from DAsgnNode.java:110:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from IfNode.java:116:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from ASTInterpreter.java:112:in `INTERPRET_BLOCK'
    from Interpreted19Block.java:206:in `evalBlockBody'
    from Interpreted19Block.java:157:in `yield'
    from Block.java:142:in `yield'
    from RubyArray.java:1606:in `eachCommon'
    from RubyArray.java:1613:in `each'
    from RubyArray$INVOKER$i$0$0$each.gen:-1:in `call'
    from CachingCallSite.java:143:in `callBlock'
    from CachingCallSite.java:154:in `callIter'
    from CallNoArgBlockNode.java:64:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from ASTInterpreter.java:74:in `INTERPRET_METHOD'
    from InterpretedMethod.java:182:in `call'
    from DefaultMethod.java:203:in `call'
    from CachingCallSite.java:168:in `call'
    from FCallOneArgNode.java:36:in `interpret'
    from LocalAsgnNode.java:123:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from ASTInterpreter.java:74:in `INTERPRET_METHOD'
    from InterpretedMethod.java:182:in `call'
    from DefaultMethod.java:203:in `call'
    from CachingCallSite.java:168:in `call'
    from FCallOneArgNode.java:36:in `interpret'
    from CallNoArgBlockNode.java:60:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from WhenOneArgNode.java:36:in `whenSlowTest'
    from WhenOneArgNode.java:46:in `when'
    from CaseNode.java:133:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from WhileNode.java:131:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from RescueNode.java:221:in `executeBody'
    from RescueNode.java:116:in `interpret'
    from BeginNode.java:83:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from BlockNode.java:71:in `interpret'
    from ASTInterpreter.java:74:in `INTERPRET_METHOD'
    from InterpretedMethod.java:139:in `call'
    from DefaultMethod.java:187:in `call'
    from CachingCallSite.java:306:in `cacheAndCall'
    from CachingCallSite.java:136:in `call'
    from VCallNode.java:88:in `interpret'
    from NewlineNode.java:105:in `interpret'
    from ASTInterpreter.java:112:in `INTERPRET_BLOCK'
    from Interpreted19Block.java:206:in `evalBlockBody'
    from Interpreted19Block.java:194:in `yield'
    from Interpreted19Block.java:125:in `call'
    from Block.java:101:in `call'
    from RubyProc.java:290:in `call'
    from RubyProc.java:228:in `call'
    from RubyRunnable.java:99:in `run'
    from Thread.java:662:in `run'

Returncode = 1

Any help would be greatly appreciated. I'm trying to upgrade from Logstash v1.4.1 to v1.5.1. Thanks in advance.