pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-83971-9999_separator.ps) >>/Users/jc/w/tmp/Tune-83971-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CaledonianCountryDances/9999_separator.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-83971-9999_separator.abc 28 ABC music file with the extracted tune(s)
Tune-83971-9999_separator.ps 30509 PostScript
Tune-83971-9999_separator.txt 28 Plain-text file with the extracted tune(s)
Tune-83971-IWishYouWouldMarryMeNow.abc 195 ABC music file with the extracted tune(s)
Tune-83971-IWishYouWouldMarryMeNow.pdf 4634 Portable Data Format
Tune-83971-IWishYouWouldMarryMeNow.ps 30583 PostScript
Tune-83971-IWishYouWouldMarryMeNow.txt 195 Plain-text file with the extracted tune(s)
Tune-83971-get.log 13652 Log file, useful mostly for debugging
These files should be available for 24 hours.