pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-59621-Vals20.ps) >>/Users/jc/w/tmp/Tune-59621-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/scand/Vals20.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_59621.log 894762 Log file, useful mostly for debugging
Form_59621.log 1168 Log file, useful mostly for debugging
Tune-59621-Vals20.abc 1823 ABC music file with the extracted tune(s)
Tune-59621-Vals20.ps 49513 PostScript
Tune-59621-Vals20.txt 1823 Plain-text file with the extracted tune(s)
Tune-59621-get.log 4218 Log file, useful mostly for debugging
These files should be available for 24 hours.