pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-53474-MyLadyCullen.ps) >>/Users/jc/w/tmp/Tune-53474-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/500/MyLadyCullen.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-53474-MyLadyCullen.abc 511 ABC music file with the extracted tune(s)
Tune-53474-MyLadyCullen.ps 33834 PostScript
Tune-53474-MyLadyCullen.txt 511 Plain-text file with the extracted tune(s)
Tune-53474-Prince_of_Waless_Birth_Day.abc 1227 ABC music file with the extracted tune(s)
Tune-53474-Prince_of_Waless_Birth_Day.ps 35981 PostScript
Tune-53474-Prince_of_Waless_Birth_Day.txt 1227 Plain-text file with the extracted tune(s)
Tune-53474-get.log 9842 Log file, useful mostly for debugging
These files should be available for 24 hours.