I'm attempting to update from 2.263.1 to 2.375.1 (huge gap I know), and I'm getting this on the Jenkins page. It just shows 2 Jenkins butler pics, a large black circle, and a large blue circle with a question mark in the middle.
I've even renamed my $JENKINS_HOME/plugins and $JENKINS_HOME/plugins.txt files in case there are incompatible plugins which I expect from a huge version gap. Any clues? java.lang.NoClassDefFoundError: org/jruby/javasupport/proxy/InternalJavaProxy at org.jenkinsci.jruby.JRubyMapper.serializedClass(JRubyMapper.java:20) at hudson.util.xstream.MapperDelegate.serializedClass(MapperDelegate.java:41) at com.thoughtworks.xstream.mapper.MapperWrapper.serializedClass(MapperWrapper.java:121) at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37) at com.thoughtworks.xstream.XStream.marshal(XStream.java:1266) at com.thoughtworks.xstream.XStream.marshal(XStream.java:1255) at com.thoughtworks.xstream.XStream.toXML(XStream.java:1228) at hudson.XmlFile.write(XmlFile.java:213) at jenkins.model.Jenkins.save(Jenkins.java:3547) at jenkins.model.Jenkins.<init>(Jenkins.java:1007) at hudson.model.Hudson.<init>(Hudson.java:86) at hudson.model.Hudson.<init>(Hudson.java:82) at hudson.WebAppMain$3.run(WebAppMain.java:247) Caused: hudson.util.HudsonFailedToLoad at hudson.WebAppMain$3.run(WebAppMain.java:261) Thanks, Chris -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/6514a893-549a-49f5-8228-eaf91fbdce0bn%40googlegroups.com.