Another parent mapping problem

[Frank Krauss]

I've added an - admittedly stupid - model to Sherpa, a flavour-changing Z'. Running all possible channels of t-t, tbar-tbar, t-tbar production with semileptonic decays (one top goes to leptons) produces two errors:

1. Process_Integrator::Sigma2(): Inconsistent summation for '2_6ddbt[nu_mumu+b]tb[scbbb]' \in '2_6jjt[nu_mumu+b]tb[jjbb]', m_sn = 0 vs. p->m_sn = 10366.

which has to do with the mapping on parent processes - this process seems not to integrate. Funnily enough, it seems as if the one with the t going to jets and the tbar to muons would work out.

2. Cluster_Algorithm::Cluster(): Failed to determine configuration. Rejecting point

which I do not understand at all.

I find both errors kind of frightening - that's why I think it is critical that we understand what's going on. The Run.dat is attached. I've also committed the model.