pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77081-Duet_for_Two_Violins.ps) >>/Users/jc/w/tmp/Tune-77081-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/Duet_for_Two_Violins.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_77081.log 958 Log file, useful mostly for debugging
Tune-77081-Duet_for_Two_Violins.abc 3590 ABC music file with the extracted tune(s)
Tune-77081-Duet_for_Two_Violins.ps 74464 PostScript
Tune-77081-Duet_for_Two_Violins.txt 3590 Plain-text file with the extracted tune(s)
Tune-77081-get.log 5807 Log file, useful mostly for debugging
These files should be available for 24 hours.