pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-465-jigs.ps) >>/Users/jc/w/tmp/Tune-465-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/perun.hscs.wmin.ac.uk/~jra/NMD/jigs.txt

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_465.log 67694 Log file, useful mostly for debugging
Coll_46500.log 72554 Log file, useful mostly for debugging
Coll_46510.log 269559 Log file, useful mostly for debugging
Coll_46512.log 270949 Log file, useful mostly for debugging
Coll_4654.log 64184 Log file, useful mostly for debugging
Coll_46547.log 68504 Log file, useful mostly for debugging
Coll_46551.log 67424 Log file, useful mostly for debugging
Coll_46574.log 71474 Log file, useful mostly for debugging
Coll_4658.log 343743 Log file, useful mostly for debugging
Coll_46588.log 272339 Log file, useful mostly for debugging
Coll_46599.log 64994 Log file, useful mostly for debugging
Form_46507.log 732 Log file, useful mostly for debugging
Form_46514.log 747 Log file, useful mostly for debugging
Form_46520.log 723 Log file, useful mostly for debugging
Form_46523.log 856 Log file, useful mostly for debugging
Form_46539.log 743 Log file, useful mostly for debugging
Form_4655.log 765 Log file, useful mostly for debugging
Form_46556.log 744 Log file, useful mostly for debugging
Form_46562.log 762 Log file, useful mostly for debugging
Tune-465-get.log 4233 Log file, useful mostly for debugging
Tune-465-jigs.abc 297 ABC music file with the extracted tune(s)
Tune-465-jigs.ps 34794 PostScript
Tune-465-jigs.txt 297 Plain-text file with the extracted tune(s)
Tune-46517-get.log 1435 Log file, useful mostly for debugging
Tune-46529-get.log 4182 Log file, useful mostly for debugging
Tune-46541-get.log 3776 Log file, useful mostly for debugging
Tune-46552-get.log 5973 Log file, useful mostly for debugging
Tune-46568-get.log 5246 Log file, useful mostly for debugging
Tune-46580-get.log 3628 Log file, useful mostly for debugging
Tune-46585-get.log 2779 Log file, useful mostly for debugging
Tune-46596-get.log 7452 Log file, useful mostly for debugging
These files should be available for 24 hours.