Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/abc2/WilliamShepherdsCollections.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-59181-WilliamShepherdsCollections.ps) >>/Users/jc/w/tmp/Tune-59181-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/abc2/WilliamShepherdsCollections.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-59181-Valse_des_Jouets-D-64-4.abc 725 ABC music file with the extracted tune(s)
Tune-59181-Valse_des_Jouets-D-64-4.ps 38366 PostScript
Tune-59181-Valse_des_Jouets-D-64-4.txt 725 Plain-text file with the extracted tune(s)
Tune-59181-WilliamShepherdsCollections.abc 164 ABC music file with the extracted tune(s)
Tune-59181-WilliamShepherdsCollections.ps 6 PostScript
Tune-59181-WilliamShepherdsCollections.txt 164 Plain-text file with the extracted tune(s)
Tune-59181-get.log 13248 Log file, useful mostly for debugging
These files should be available for 24 hours.