...
I tried the default TripleRand, and HepJamesRandom generators, via GlastRandomSvc.RandomEngine. In both cases, the generated value was non-zero up to the return from the function, but was zero outside it. I'm at a loss as to where the value went. I looked around on the floor beside my laptop, but nada.
Further investigations on BackGndAvg source (JME)
I recompiled FluxSvc with GlastRelease v6r2p1, but using the previous version (v8r13) of flux. The problem went away. It seems likely that some of the recent clean up of the flux package may have cleaned a little too much...
Fix to flux (THB)
The transition from flux v8r13 to v8r14 broke CHIMEspectrum, so that it was returning NaN for energy. This is
now fixed in v8r14p1. I hope that, although the connection to the strange behavior above is not clear, this
will fix it.