pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-58503-036_Black_Dance.ps) >>/Users/jc/w/tmp/Tune-58503-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Straight_Skillern/036_Black_Dance.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_58503.log 831 Log file, useful mostly for debugging
Tune-58503-036_Black_Dance.abc 1111 ABC music file with the extracted tune(s)
Tune-58503-036_Black_Dance.ps 34297 PostScript
Tune-58503-036_Black_Dance.txt 1111 Plain-text file with the extracted tune(s)
Tune-58503-get.log 4631 Log file, useful mostly for debugging
These files should be available for 24 hours.