pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38647-017_Miss_Chalmers_Gigg.ps) >>/Users/jc/w/tmp/Tune-38647-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/SCAJMR/017_Miss_Chalmers_Gigg.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-38647-017_Miss_Chalmers_Gigg.abc 598 ABC music file with the extracted tune(s)
Tune-38647-017_Miss_Chalmers_Gigg.ps 34420 PostScript
Tune-38647-017_Miss_Chalmers_Gigg.txt 598 Plain-text file with the extracted tune(s)
Tune-38647-get.log 4795 Log file, useful mostly for debugging
These files should be available for 24 hours.