On Oct 24, 2012, at 19:47 , "Becker, Scott" <Scott.Becker@xxxxxxxxxxxx> wrote: > I have tried reducing the number of threads to 1, with the same error. I > have tried two separate sets of input files, both of which assemble fine on a > different machine running MIRA 3.4.0. > > Any idea where I should start looking to debug this problem? Phewww … not really. You are saying that the same data sets are working without a problem on another machine, right? Is the binary from SourceForge or compiled yourself? B.