editProject: NoSuchMethodException:

I'm writing a small application that's intended to consolidate all build goals and arguments for all our projects in continuum:

Client:
—
String address = "http://continuumhost:8000/continuum";

ProjectsReader reader = new ProjectsReader(new URL(address));

for (Project project : reader.readProjects()) {
// reader.refreshProject(project);

List<BuildDefinition> defs = project.getBuildDefinitions();
if (defs != null && defs.size() == 1) {
for (BuildDefinition def : defs)

{ def.setGoals("clean deploy site:site site:deploy eclipse:eclipse scm:checkin"); def.setArguments("--batch-mode --non-recursive -Dincludes=\".project .classpath .settings\" -Dmessage=\"continuum checkin of generated eclipse files\""); }

}
else

{ System.out.println("Project " + project.getId() + " " + project.getName() + " has not exactly one build"); }

reader.editProject(project);
—

Exception:
—
Exception in thread "main" org.apache.xmlrpc.XmlRpcException: java.lang.NoSuchMethodException: org.apache.maven.continuum.xmlrpc.DefaultContinuumXmlRpc.updatenullProject(java.util.Hashtable)
at org.apache.xmlrpc.XmlRpcClientResponseProcessor.decodeException(XmlRpcClientResponseProcessor.java:102)
at org.apache.xmlrpc.XmlRpcClientResponseProcessor.decodeResponse(XmlRpcClientResponseProcessor.java:69)
at org.apache.xmlrpc.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:72)
at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:193)
at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:184)
at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:177)
at org.apache.maven.continuum.rpc.ProjectsReader.editProject(ProjectsReader.java:127)
at SampleClient.main(SampleClient.java:55)
—

It doesn't matter wether or not "reader.refreshProject(project);" is active. Am I doing something wrong here or is this a bug? The documentation only shows how to read a project...