pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93163-013_Colonel_Websters_March.ps) >>/Users/jc/w/tmp/Tune-93163-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/SCAJMR/013_Colonel_Websters_March.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-93163-013_Colonel_Websters_March.abc 762 ABC music file with the extracted tune(s)
Tune-93163-013_Colonel_Websters_March.ps 37634 PostScript
Tune-93163-013_Colonel_Websters_March.txt 762 Plain-text file with the extracted tune(s)
Tune-93163-get.log 4899 Log file, useful mostly for debugging
These files should be available for 24 hours.