pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16267-150_Quart_Pot.ps) >>/Users/jc/w/tmp/Tune-16267-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Straight_Skillern/150_Quart_Pot.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_16267.log 1069 Log file, useful mostly for debugging
Tune-16267-150_Quart_Pot.abc 773 ABC music file with the extracted tune(s)
Tune-16267-150_Quart_Pot.ps 33131 PostScript
Tune-16267-150_Quart_Pot.txt 773 Plain-text file with the extracted tune(s)
Tune-16267-get.log 4636 Log file, useful mostly for debugging
These files should be available for 24 hours.