pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8666-Hambo4.ps) >>/Users/jc/w/tmp/Tune-8666-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/scand/Hambo4.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_86667.log 274495 Log file, useful mostly for debugging
Tune-8666-Hambo4.abc 2005 ABC music file with the extracted tune(s)
Tune-8666-Hambo4.ps 55138 PostScript
Tune-8666-Hambo4.txt 2005 Plain-text file with the extracted tune(s)
Tune-8666-get.log 4227 Log file, useful mostly for debugging
Tune-86663-get.log 19108 Log file, useful mostly for debugging
These files should be available for 24 hours.