Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1792/MrKynastonsFamousDance.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4618-MrKynastonsFamousDance.ps) >>/Users/jc/w/tmp/Tune-4618-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1792/MrKynastonsFamousDance.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-4618-MrKynastonsFamousDance.abc 159 ABC music file with the extracted tune(s)
Tune-4618-MrKynastonsFamousDance.ps 6 PostScript
Tune-4618-MrKynastonsFamousDance.txt 159 Plain-text file with the extracted tune(s)
Tune-4618-get.log 7163 Log file, useful mostly for debugging
Tune-46183-BeautifulScrabmaggThebyGB_PLFD1701_414.abc 431 ABC music file with the extracted tune(s)
Tune-46183-BeautifulScrabmaggThebyGB_PLFD1701_414.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-46183-BeautifulScrabmaggThebyGB_PLFD1701_414.ps 34859 PostScript
Tune-46183-BeautifulScrabmaggThebyGB_PLFD1701_414.txt 431 Plain-text file with the extracted tune(s)
Tune-46183-get.log 10896 Log file, useful mostly for debugging
These files should be available for 24 hours.