pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-52907-AMHSI_abc1.ps) >>/Users/jc/w/tmp/Tune-52907-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Fraser/AMHSI_abc1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-52907-AMHSI_abc1.abc 144834 ABC music file with the extracted tune(s)
Tune-52907-AMHSI_abc1.ps 1244799 PostScript
Tune-52907-AMHSI_abc1.txt 144834 Plain-text file with the extracted tune(s)
Tune-52907-get.log 136661 Log file, useful mostly for debugging
These files should be available for 24 hours.