pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-345-MerryMerryMilkeMaids.ps) >>/Users/jc/w/tmp/Tune-345-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/MerryMerryMilkeMaids.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_34500.log 355472 Log file, useful mostly for debugging
Coll_34512.log 279211 Log file, useful mostly for debugging
Coll_34543.log 293211 Log file, useful mostly for debugging
Find_34556.log 1431 Log file, useful mostly for debugging
Find_34581.log 1447 Log file, useful mostly for debugging
Form_34569.log 873 Log file, useful mostly for debugging
Tune-345-MerryMerryMilkeMaids.abc 910 ABC music file with the extracted tune(s)
Tune-345-MerryMerryMilkeMaids.ps 35887 PostScript
Tune-345-MerryMerryMilkeMaids.txt 910 Plain-text file with the extracted tune(s)
Tune-345-get.log 4679 Log file, useful mostly for debugging
Tune-34502-get.log 3313 Log file, useful mostly for debugging
Tune-34514-get.log 3321 Log file, useful mostly for debugging
Tune-34524-get.log 1451 Log file, useful mostly for debugging
Tune-34525-get.log 3321 Log file, useful mostly for debugging
Tune-34533-get.log 1363 Log file, useful mostly for debugging
Tune-34537-get.log 2931 Log file, useful mostly for debugging
Tune-34538-get.log 1396 Log file, useful mostly for debugging
Tune-34545-get.log 1222 Log file, useful mostly for debugging
Tune-34549-get.log 2935 Log file, useful mostly for debugging
Tune-3456-get.log 1360 Log file, useful mostly for debugging
Tune-34560-get.log 1385 Log file, useful mostly for debugging
Tune-34561-get.log 2935 Log file, useful mostly for debugging
Tune-34566-get.log 1387 Log file, useful mostly for debugging
Tune-34575-get.log 2997 Log file, useful mostly for debugging
Tune-34576-get.log 1332 Log file, useful mostly for debugging
Tune-34583-get.log 1231 Log file, useful mostly for debugging
Tune-34585-get.log 1310 Log file, useful mostly for debugging
Tune-34587-get.log 2997 Log file, useful mostly for debugging
Tune-34592-get.log 1378 Log file, useful mostly for debugging
Tune-34598-get.log 1378 Log file, useful mostly for debugging
These files should be available for 24 hours.