Exceptions after migrating from M3a to Beta 2 when loading j

An internal error occurred during: "Synchronizing all loaded components".

java.util.NoSuchElementException
at java.util.AbstractList$Itr.next(Unknown Source)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.ChangeSetNode$1.computeItemsAndChildren(ChangeSetNode.java:211)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.mutator.ModelMutator$MutateQueryVisitor.visit(ModelMutator.java:293)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.mutator.ModelMutator$MutateQueryVisitor.visit(ModelMutator.java:312)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.mutator.ModelMutator$MutateQueryVisitor.start(ModelMutator.java:287)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.mutator.ModelMutator$MutateQueryVisitor.start(ModelMutator.java:279)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.mutator.ModelMutator.refresh(ModelMutator.java:129)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.ComponentSyncContext.refresh(ComponentSyncContext.java:730)
at
com.ibm.team.filesystem.rcp.core.internal.changes.util.ComponentSyncModel$UpdateContextJob.run(ComponentSyncModel.java:697)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

Any suggestions for working around this?
Is there something tucked away in my cache somewhere that I need to flush
out?

I don't have steps to reproduce. When I upgraded, I tried manually
replacing the jazz folder and at one point opened my workspace without the
jazz plug-ins available. Once I got beta 2 activated and launched my
workspace, all of my projects were messed up, and I unloaded all jazz
workspaces and reloaded them. This is what is happening when I reload each
jazz repo workspace.

I have tried unloading all SCM components, deleting my .jazz3 folder, and
reloading, and I still get this exception.

Thanks.