pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8510-xmas.ps) >>/Users/jc/w/tmp/Tune-8510-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/xmas.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_85108.log 516156 Log file, useful mostly for debugging
Tune-8510-get.log 37440 Log file, useful mostly for debugging
Tune-8510-xmas.abc 21110 ABC music file with the extracted tune(s)
Tune-8510-xmas.ps 194461 PostScript
Tune-8510-xmas.txt 21110 Plain-text file with the extracted tune(s)
Tune-85101-WildGeese.abc 1919 ABC music file with the extracted tune(s)
Tune-85101-WildGeese.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-85101-WildGeese.ps 50604 PostScript
Tune-85101-WildGeese.txt 1919 Plain-text file with the extracted tune(s)
Tune-85101-get.log 5575 Log file, useful mostly for debugging
These files should be available for 24 hours.