pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-58856-Hambo03.ps) >>/Users/jc/w/tmp/Tune-58856-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/scand/Hambo03.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-58856-Hambo03.abc 2463 ABC music file with the extracted tune(s)
Tune-58856-Hambo03.ps 60374 PostScript
Tune-58856-Hambo03.txt 2463 Plain-text file with the extracted tune(s)
Tune-58856-get.log 13270 Log file, useful mostly for debugging
These files should be available for 24 hours.