I have set up a job that contains 2 Multijob phases, using the multijob plugin.
I want to have two parameters for the job and pass them to both Multijob phases jobs.

I will refer to the main Job as JobA.
The first Multijob phase job as JobB and the second Multijob phase job as JobC.

I have set up jobA that with 2 parameters.
These parameters are passed jobB ('Current job parameters' is checked) - no problem, job ends with the correct parameters.
But when the parameters are passed to JobC ('Current job parameters' is checked as well)- ALL available Build executors are turning into zombies with the status 'Dead ' with the exception:
java.lang.NullPointerException
at hudson.model.ParametersAction.getAssignedLabel(ParametersAction.java:126)
at hudson.model.Queue$Item.getAssignedLabel(Queue.java:1265)
at hudson.model.Node.canTake(Node.java:308)
at hudson.model.Queue$JobOffer.canTake(Queue.java:210)
at hudson.model.Queue.maintain(Queue.java:952)
at hudson.model.Queue.pop(Queue.java:783)
at hudson.model.Executor.grabJob(Executor.java:287)
at hudson.model.Executor.run(Executor.java:208)

At this stage:
jobB has finished.
jobC is pending start.
jobA is waiting for JobC.

Even if at this stage I go to the settings and enlarge the number of Executors, they immediately turn into zombies as well.

Please advice.