pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-97822-02_la_Commere.ps) >>/Users/jc/w/tmp/Tune-97822-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1770/Longman_Cotillons/02_la_Commere.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-97822-02_la_Commere.abc 1468 ABC music file with the extracted tune(s)
Tune-97822-02_la_Commere.ps 39365 PostScript
Tune-97822-02_la_Commere.txt 1468 Plain-text file with the extracted tune(s)
Tune-97822-get.log 4723 Log file, useful mostly for debugging
These files should be available for 24 hours.