Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book19/HaandMeDoonDaFiddle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7427-HaandMeDoonDaFiddle.ps) >>/Users/jc/w/tmp/Tune-7427-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book19/HaandMeDoonDaFiddle.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_7427.log 294165 Log file, useful mostly for debugging
Coll_74273.log 278710 Log file, useful mostly for debugging
Coll_74275.log 291356 Log file, useful mostly for debugging
Coll_74279.log 289950 Log file, useful mostly for debugging
Tune-7427-HaandMeDoonDaFiddle.abc 158 ABC music file with the extracted tune(s)
Tune-7427-HaandMeDoonDaFiddle.ps 6 PostScript
Tune-7427-HaandMeDoonDaFiddle.txt 158 Plain-text file with the extracted tune(s)
Tune-7427-get.log 4269 Log file, useful mostly for debugging
Tune-74270-get.log 3430 Log file, useful mostly for debugging
Tune-74279-get.log 5363 Log file, useful mostly for debugging
These files should be available for 24 hours.