pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2396-LightAndAiryJ.ps) >>/Users/jc/w/tmp/Tune-2396-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/500/LightAndAiryJ.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_23965.log 3141 Log file, useful mostly for debugging
Tune-2396-LightAndAiryJ.abc 829 ABC music file with the extracted tune(s)
Tune-2396-LightAndAiryJ.ps 37885 PostScript
Tune-2396-LightAndAiryJ.txt 829 Plain-text file with the extracted tune(s)
Tune-2396-get.log 4443 Log file, useful mostly for debugging
Tune-23961-get.log 3336 Log file, useful mostly for debugging
Tune-23967-get.log 5731 Log file, useful mostly for debugging
These files should be available for 24 hours.