pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8426-16_LoveAndABottle.ps) >>/Users/jc/w/tmp/Tune-8426-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ThomasBraysCountryDances1699/16_LoveAndABottle.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Sess-84264.log 27849 Log file, useful mostly for debugging
Tune-8426-16_LoveAndABottle.abc 2627 ABC music file with the extracted tune(s)
Tune-8426-16_LoveAndABottle.ps 42359 PostScript
Tune-8426-16_LoveAndABottle.txt 2627 Plain-text file with the extracted tune(s)
Tune-8426-_.abc 137 ABC music file with the extracted tune(s)
Tune-8426-_.txt 137 Plain-text file with the extracted tune(s)
Tune-8426-get.log 7786 Log file, useful mostly for debugging
These files should be available for 24 hours.