pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-18456-From_Night_till_Morn.ps) >>/Users/jc/w/tmp/Tune-18456-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Brewer/From_Night_till_Morn.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_18456.log 390696 Log file, useful mostly for debugging
Tune-18456-From_Night_till_Morn.abc 799 ABC music file with the extracted tune(s)
Tune-18456-From_Night_till_Morn.ps 40237 PostScript
Tune-18456-From_Night_till_Morn.txt 799 Plain-text file with the extracted tune(s)
Tune-18456-get.log 4679 Log file, useful mostly for debugging
These files should be available for 24 hours.