pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6902-Andrew_Kerr.ps) >>/Users/jc/w/tmp/Tune-6902-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CCD/Andrew_Kerr.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_69023.log 671064 Log file, useful mostly for debugging
Coll_69025.log 298382 Log file, useful mostly for debugging
Form_69024.log 2000 Log file, useful mostly for debugging
Form_69025.abc 1 ABC music file with the extracted tune(s)
Form_69025.log 1201 Log file, useful mostly for debugging
Tune-6902-Andrew_Kerr.abc 1418 ABC music file with the extracted tune(s)
Tune-6902-Andrew_Kerr.ps 35015 PostScript
Tune-6902-Andrew_Kerr.txt 1418 Plain-text file with the extracted tune(s)
Tune-6902-get.log 4386 Log file, useful mostly for debugging
Tune-69021-get.log 6622 Log file, useful mostly for debugging
Tune-69022-get.log 6518 Log file, useful mostly for debugging
Tune-69025-get.log 9066 Log file, useful mostly for debugging
Tune-69027-get.log 7970 Log file, useful mostly for debugging
These files should be available for 24 hours.