pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-60628-21103_SIR_JOHN_MALCOLM.ps) >>/Users/jc/w/tmp/Tune-60628-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21103_SIR_JOHN_MALCOLM.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_60628.log 980 Log file, useful mostly for debugging
Tune-60628-21103_SIR_JOHN_MALCOLM.abc 639 ABC music file with the extracted tune(s)
Tune-60628-21103_SIR_JOHN_MALCOLM.ps 38434 PostScript
Tune-60628-21103_SIR_JOHN_MALCOLM.txt 639 Plain-text file with the extracted tune(s)
Tune-60628-get.log 8418 Log file, useful mostly for debugging
These files should be available for 24 hours.