pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-33141-32741_PRINCESS_BEATRICE_WALTZ_3.ps) >>/Users/jc/w/tmp/Tune-33141-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/32741_PRINCESS_BEATRICE_WALTZ_3.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_33141.log 132485 Log file, useful mostly for debugging
Tune-33141-32741_PRINCESS_BEATRICE_WALTZ_3.abc 840 ABC music file with the extracted tune(s)
Tune-33141-32741_PRINCESS_BEATRICE_WALTZ_3.ps 37980 PostScript
Tune-33141-32741_PRINCESS_BEATRICE_WALTZ_3.txt 840 Plain-text file with the extracted tune(s)
Tune-33141-get.log 5022 Log file, useful mostly for debugging
These files should be available for 24 hours.