pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54098-4024_Countess_of_Cassillis_Reel.ps) >>/Users/jc/w/tmp/Tune-54098-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/4024_Countess_of_Cassillis_Reel.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_54098.log 434610 Log file, useful mostly for debugging
Tune-54098-4024_Countess_of_Cassillis_Reel.abc 832 ABC music file with the extracted tune(s)
Tune-54098-4024_Countess_of_Cassillis_Reel.ps 38226 PostScript
Tune-54098-4024_Countess_of_Cassillis_Reel.txt 832 Plain-text file with the extracted tune(s)
Tune-54098-get.log 5286 Log file, useful mostly for debugging
These files should be available for 24 hours.