Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1759/CSRHW-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8678-CSRHW-abc2.ps) >>/Users/jc/w/tmp/Tune-8678-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1759/CSRHW-abc2.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-8678-CSRHW-abc2.abc 147 ABC music file with the extracted tune(s)
Tune-8678-CSRHW-abc2.ps 6 PostScript
Tune-8678-CSRHW-abc2.txt 147 Plain-text file with the extracted tune(s)
Tune-8678-get.log 4064 Log file, useful mostly for debugging
Tune-86783-10781_.abc 50 ABC music file with the extracted tune(s)
Tune-86783-10781_.txt 50 Plain-text file with the extracted tune(s)
Tune-86783-get.log 2932 Log file, useful mostly for debugging
Tune-86788-Nell_Dalys_Reel.ps 33012 PostScript
Tune-86788-get.log 4759 Log file, useful mostly for debugging
These files should be available for 24 hours.