Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book41/HibernianMuse-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9743-HibernianMuse-V1.ps) >>/Users/jc/w/tmp/Tune-9743-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book41/HibernianMuse-V1.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-9743-HibernianMuse-V1.abc 155 ABC music file with the extracted tune(s)
Tune-9743-HibernianMuse-V1.ps 6 PostScript
Tune-9743-HibernianMuse-V1.txt 155 Plain-text file with the extracted tune(s)
Tune-9743-get.log 4202 Log file, useful mostly for debugging
Tune-97432-BonAccordCollection.abc 158 ABC music file with the extracted tune(s)
Tune-97432-BonAccordCollection.ps 6 PostScript
Tune-97432-BonAccordCollection.txt 158 Plain-text file with the extracted tune(s)
Tune-97432-EliasHowe_MusiciansCompanionP2-1843-V1.abc 177 ABC music file with the extracted tune(s)
Tune-97432-EliasHowe_MusiciansCompanionP2-1843-V1.txt 177 Plain-text file with the extracted tune(s)
Tune-97432-get.log 8019 Log file, useful mostly for debugging
Tune-97433-get.log 12619 Log file, useful mostly for debugging
Tune-97436-NorthumbrianMinstrelsy.abc 159 ABC music file with the extracted tune(s)
Tune-97436-NorthumbrianMinstrelsy.ps 6 PostScript
Tune-97436-NorthumbrianMinstrelsy.txt 159 Plain-text file with the extracted tune(s)
Tune-97436-get.log 4245 Log file, useful mostly for debugging
These files should be available for 24 hours.