[Nauty-list] shortg error?

[craig.ross at gm.com]

I'm getting an issue with the shortg command (executable file at the 
command line), not a low-level or library call.  It insists that I've 
given it the input file twice, though I don't see how.  Here's an example 
session:

C:\eng_apps\openlogic\cygwin\home\nauty25r5>shortg -k -i2 g1e.txt 
g1eni.txt
>A shortg -ki=adjtriang[1:1,3] g1e.txt g1eni.txt
>Z      6 graphs read from g1e.txt
Input file specified two times.

>Z      0 graphs written to g1eni.txt
>E shortg: sort process exited abnormally (code 1)

Variations on the command line don't change the result. Anyone have any 
ideas on this?  I just got it compiled (Win7 with Cygwin), and this is the 
first time I've used it. Other commands (geng, addedgeg) work fine.




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