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bbfa235
(Get the code!)
It turns out that "GhostNumber" is an optional attribute of particles, but I treated it as mandatory. A quick workaround is to add "QuantumNumbers-> {GhostNumber -> 0}" to all your particles and ignore the FeynRules warning "Selfconjugated fields should not carry quantumnumbers."
I will make more attributes optional in 2.8.3.
... and provide better error messages;)