Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1806/Playford_COST.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3046-Playford_COST.ps) >>/Users/jc/w/tmp/Tune-3046-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1806/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
Coll_30460.log 147345 Log file, useful mostly for debugging
Tune-3046-BotCDaSS.abc 152 ABC music file with the extracted tune(s)
Tune-3046-BotCDaSS.txt 152 Plain-text file with the extracted tune(s)
Tune-3046-Playford_COST.abc 150 ABC music file with the extracted tune(s)
Tune-3046-Playford_COST.ps 6 PostScript
Tune-3046-Playford_COST.txt 150 Plain-text file with the extracted tune(s)
Tune-3046-get.log 105332 Log file, useful mostly for debugging
Tune-30461-get.log 92343 Log file, useful mostly for debugging
Tune-30463-get.log 27555 Log file, useful mostly for debugging
Tune-30464-get.log 4948 Log file, useful mostly for debugging
Tune-30465-get.log 10391 Log file, useful mostly for debugging
Tune-30467-get.log 6096 Log file, useful mostly for debugging
Tune-30469-get.log 3270 Log file, useful mostly for debugging
These files should be available for 24 hours.