pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-70721-Fickle_Polly.ps) >>/Users/jc/w/tmp/Tune-70721-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnWalsh/Fickle_Polly.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-70721-Fickle_Polly.abc 1261 ABC music file with the extracted tune(s)
Tune-70721-Fickle_Polly.ps 34967 PostScript
Tune-70721-Fickle_Polly.txt 1261 Plain-text file with the extracted tune(s)
Tune-70721-get.log 108072 Log file, useful mostly for debugging
These files should be available for 24 hours.