pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-79590-pr_Shot.ps) >>/Users/jc/w/tmp/Tune-79590-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/scand/pr_Shot.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-79590-get.log 4248 Log file, useful mostly for debugging
Tune-79590-pr_Shot.abc 221 ABC music file with the extracted tune(s)
Tune-79590-pr_Shot.ps 30548 PostScript
Tune-79590-pr_Shot.txt 221 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.