Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CentColl/Playford_COST.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3795-Playford_COST.ps) >>/Users/jc/w/tmp/Tune-3795-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CentColl/Playford_COST.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-3795-Playford_COST.abc 154 ABC music file with the extracted tune(s)
Tune-3795-Playford_COST.ps 6 PostScript
Tune-3795-Playford_COST.txt 154 Plain-text file with the extracted tune(s)
Tune-3795-get.log 4151 Log file, useful mostly for debugging
Tune-37950-get.log 3953 Log file, useful mostly for debugging
Tune-37952-Gallini_NewColl44Cot2.abc 171 ABC music file with the extracted tune(s)
Tune-37952-Gallini_NewColl44Cot2.txt 171 Plain-text file with the extracted tune(s)
Tune-37952-get.log 8733 Log file, useful mostly for debugging
Tune-37953-get.log 5493 Log file, useful mostly for debugging
Tune-37955-get.log 3953 Log file, useful mostly for debugging
Tune-37957-get.log 3252 Log file, useful mostly for debugging
Tune-37959-get.log 4617 Log file, useful mostly for debugging
These files should be available for 24 hours.