Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/GftF/Playford_COST.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7343-Playford_COST.ps) >>/Users/jc/w/tmp/Tune-7343-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/GftF/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-7343-Playford_COST.abc 150 ABC music file with the extracted tune(s)
Tune-7343-Playford_COST.ps 6 PostScript
Tune-7343-Playford_COST.txt 150 Plain-text file with the extracted tune(s)
Tune-7343-get.log 4125 Log file, useful mostly for debugging
Tune-73431-get.log 3096 Log file, useful mostly for debugging
Tune-73432-24CountryDances_1808_Goulding_AK.abc 169 ABC music file with the extracted tune(s)
Tune-73432-24CountryDances_1808_Goulding_AK.pdf 2217 Portable Data Format
Tune-73432-24CountryDances_1808_Goulding_AK.ps 6 PostScript
Tune-73432-24CountryDances_1808_Goulding_AK.txt 169 Plain-text file with the extracted tune(s)
Tune-73432-get.log 10632 Log file, useful mostly for debugging
Tune-73435-get.log 15219 Log file, useful mostly for debugging
Tune-73436-get.log 5838 Log file, useful mostly for debugging
Tune-73437-get.log 7807 Log file, useful mostly for debugging
These files should be available for 24 hours.