After upgrading to Jenkins 1.550 this morning, projects are failing when archiving artifacts.

Archiving artifacts
ERROR: Failed to archive artifacts: package/*.tar.gz
java.io.IOException: remote file operation failed: /home/jenkins-builds/workspace/Build-RocketX-Driver-Linux at hudson.remoting.Channel@496d864e:Elysium
at hudson.FilePath.act(FilePath.java:910)
at hudson.FilePath.act(FilePath.java:887)
at hudson.tasks.ArtifactArchiver.perform(ArtifactArchiver.java:138)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:784)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:756)
at hudson.model.Build$BuildExecution.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:705)
at hudson.model.Run.execute(Run.java:1695)
at com.tikal.jenkins.plugins.multijob.MultiJobBuild.run(MultiJobBuild.java:73)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:231)
Caused by: java.io.IOException: Remote call on Elysium failed
at hudson.remoting.Channel.call(Channel.java:731)
at hudson.FilePath.act(FilePath.java:903)
... 11 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.apache.tools.ant.Location
at org.apache.tools.ant.ProjectComponent.<init>(ProjectComponent.java:43)
at org.apache.tools.ant.types.DataType.<init>(DataType.java:40)
at org.apache.tools.ant.types.AbstractFileSet.<init>(AbstractFileSet.java:82)
at org.apache.tools.ant.types.FileSet.<init>(FileSet.java:36)
at hudson.Util.createFileSet(Util.java:1025)
at hudson.tasks.ArtifactArchiver$ListFiles.invoke(ArtifactArchiver.java:181)
at hudson.tasks.ArtifactArchiver$ListFiles.invoke(ArtifactArchiver.java:172)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2461)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:701)