Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book43/Collections.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4658-Collections.ps) >>/Users/jc/w/tmp/Tune-4658-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book43/Collections.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_4658.log 159067 Log file, useful mostly for debugging
Tune-4658-Collections.abc 150 ABC music file with the extracted tune(s)
Tune-4658-Collections.ps 6 PostScript
Tune-4658-Collections.txt 150 Plain-text file with the extracted tune(s)
Tune-4658-get.log 8966 Log file, useful mostly for debugging
Tune-46580-get.log 13174 Log file, useful mostly for debugging
Tune-46582-AMHSI_abc1.abc 148 ABC music file with the extracted tune(s)
Tune-46582-AMHSI_abc1.pdf 2217 Portable Data Format
Tune-46582-AMHSI_abc1.ps 6 PostScript
Tune-46582-AMHSI_abc1.txt 148 Plain-text file with the extracted tune(s)
Tune-46582-get.log 4890 Log file, useful mostly for debugging
Tune-46584-get.log 8090 Log file, useful mostly for debugging
Tune-46585-get.log 5098 Log file, useful mostly for debugging
Tune-46586-get.log 4691 Log file, useful mostly for debugging
Tune-46587-get.log 4151 Log file, useful mostly for debugging
These files should be available for 24 hours.