I'm trying to use the Parameterized Trigger plugin to launch another project.
I only have one parameter: "Subversion revision". When the secondary job is
launched, I get this error:

Started by upstream project "project_name" build number 500
Building remotely on servername
FATAL: remote file operation failed
hudson.util.IOException2: remote file operation failed
at hudson.FilePath.act(FilePath.java:672)
at hudson.FilePath.act(FilePath.java:660)
at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:534)
at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:482)
at hudson.model.AbstractProject.checkout(AbstractProject.java:898)
at hudson.model.AbstractBuild$AbstractRunner.checkout
(AbstractBuild.java:400)
at hudson.model.AbstractBuild$AbstractRunner.run
(AbstractBuild.java:349)
at hudson.model.Run.run(Run.java:1106)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:93)
at hudson.model.Executor.run(Executor.java:122)
Caused by: java.io.IOException: Unable to serialize
hudson.FilePath$FileCallableWrapper@88b8f5
at hudson.remoting.UserRequest.serialize(UserRequest.java:145)
at hudson.remoting.UserRequest.<init>(UserRequest.java:61)
at hudson.remoting.Channel.call(Channel.java:514)
at hudson.FilePath.act(FilePath.java:667)
... 10 more
Caused by: java.io.NotSerializableException: hudson.scm.RevisionParameterAction
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at hudson.remoting.UserRequest._serialize(UserRequest.java:134)
at hudson.remoting.UserRequest.serialize(UserRequest.java:143)
... 13 more

Hudson: 1.323, trigger version 2.0. The jobs run fine outside of this
trigger. Any ideas? TIA.