pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6859-Grove.ps) >>/Users/jc/w/tmp/Tune-6859-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/OldEnglishCountryDances/Grove.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_68599.log 149293 Log file, useful mostly for debugging
List68590.log 162 Log file, useful mostly for debugging
Tune-6859-Grove.abc 354 ABC music file with the extracted tune(s)
Tune-6859-Grove.ps 32477 PostScript
Tune-6859-Grove.txt 354 Plain-text file with the extracted tune(s)
Tune-6859-get.log 4412 Log file, useful mostly for debugging
Tune-68592-Kerr_MM1-V1.abc 149 ABC music file with the extracted tune(s)
Tune-68592-Kerr_MM1-V1.ps 6 PostScript
Tune-68592-Kerr_MM1-V1.txt 149 Plain-text file with the extracted tune(s)
Tune-68592-get.log 4016 Log file, useful mostly for debugging
Tune-68593-24CountryDances_1812_JGray.abc 169 ABC music file with the extracted tune(s)
Tune-68593-24CountryDances_1812_JGray.txt 169 Plain-text file with the extracted tune(s)
Tune-68593-get.log 7631 Log file, useful mostly for debugging
Tune-68594-get.log 3535 Log file, useful mostly for debugging
These files should be available for 24 hours.