pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-45158-21653_NOW_IS_THE_TIME.ps) >>/Users/jc/w/tmp/Tune-45158-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21653_NOW_IS_THE_TIME.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-45158-21653_NOW_IS_THE_TIME.abc 715 ABC music file with the extracted tune(s)
Tune-45158-21653_NOW_IS_THE_TIME.ps 39943 PostScript
Tune-45158-21653_NOW_IS_THE_TIME.txt 715 Plain-text file with the extracted tune(s)
Tune-45158-get.log 4870 Log file, useful mostly for debugging
These files should be available for 24 hours.