pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78790-024_Kirn.ps) >>/Users/jc/w/tmp/Tune-78790-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnFrench/024_Kirn.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-78790-024_Kirn.abc 502 ABC music file with the extracted tune(s)
Tune-78790-024_Kirn.ps 35381 PostScript
Tune-78790-024_Kirn.txt 502 Plain-text file with the extracted tune(s)
Tune-78790-Source_Denis_Murphy_1-001.svg 23216 Scalable Vector Graphics format
Tune-78790-Source_Denis_Murphy_1.abc 594 ABC music file with the extracted tune(s)
Tune-78790-Source_Denis_Murphy_1.txt 594 Plain-text file with the extracted tune(s)
Tune-78790-get.log 19110 Log file, useful mostly for debugging
These files should be available for 24 hours.