pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6887-GatheringPeascods.ps) >>/Users/jc/w/tmp/Tune-6887-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/england/GatheringPeascods.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_6887.log 371444 Log file, useful mostly for debugging
Coll_68874.log 240776 Log file, useful mostly for debugging
Coll_68877.log 247800 Log file, useful mostly for debugging
Coll_68879.log 390606 Log file, useful mostly for debugging
Form_68870.log 872 Log file, useful mostly for debugging
Form_68879.log 851 Log file, useful mostly for debugging
Tune-6887-GatheringPeascods.abc 2293 ABC music file with the extracted tune(s)
Tune-6887-GatheringPeascods.ps 44375 PostScript
Tune-6887-GatheringPeascods.txt 2293 Plain-text file with the extracted tune(s)
Tune-6887-get.log 4536 Log file, useful mostly for debugging
Tune-68870-get.log 4744 Log file, useful mostly for debugging
Tune-68873-get.log 3764 Log file, useful mostly for debugging
Tune-68875-get.log 1549 Log file, useful mostly for debugging
Tune-68878-get.log 4715 Log file, useful mostly for debugging
These files should be available for 24 hours.