Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book40/HaandMeDoonDaFiddle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3763-HaandMeDoonDaFiddle.ps) >>/Users/jc/w/tmp/Tune-3763-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book40/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_37631.log 471011 Log file, useful mostly for debugging
Tune-3763-HaandMeDoonDaFiddle.abc 158 ABC music file with the extracted tune(s)
Tune-3763-HaandMeDoonDaFiddle.ps 6 PostScript
Tune-3763-HaandMeDoonDaFiddle.txt 158 Plain-text file with the extracted tune(s)
Tune-3763-get.log 4265 Log file, useful mostly for debugging
Tune-37634-IgnatiusSancho_CNS_v1.abc 170 ABC music file with the extracted tune(s)
Tune-37634-IgnatiusSancho_CNS_v1.ps 6 PostScript
Tune-37634-IgnatiusSancho_CNS_v1.txt 170 Plain-text file with the extracted tune(s)
Tune-37634-get.log 4296 Log file, useful mostly for debugging
Tune-37639-IaST-abc2.abc 148 ABC music file with the extracted tune(s)
Tune-37639-IaST-abc2.ps 6 PostScript
Tune-37639-IaST-abc2.txt 148 Plain-text file with the extracted tune(s)
Tune-37639-get.log 4101 Log file, useful mostly for debugging
These files should be available for 24 hours.