Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/SliabhLuachroOnParade/Kerr_MM4-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2350-Kerr_MM4-V1.ps) >>/Users/jc/w/tmp/Tune-2350-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/SliabhLuachroOnParade/Kerr_MM4-V1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_23508.log 985 Log file, useful mostly for debugging
Tune-2350-Kerr_MM4-V1.abc 165 ABC music file with the extracted tune(s)
Tune-2350-Kerr_MM4-V1.ps 6 PostScript
Tune-2350-Kerr_MM4-V1.txt 165 Plain-text file with the extracted tune(s)
Tune-2350-get.log 4187 Log file, useful mostly for debugging
Tune-23501-get.log 7240 Log file, useful mostly for debugging
Tune-23502-CSR3-abc2.abc 158 ABC music file with the extracted tune(s)
Tune-23502-CSR3-abc2.ps 6 PostScript
Tune-23502-CSR3-abc2.txt 158 Plain-text file with the extracted tune(s)
Tune-23502-get.log 4044 Log file, useful mostly for debugging
Tune-23503-Jean_Henry_dAnglebert_PdC2.abc 171 ABC music file with the extracted tune(s)
Tune-23503-Jean_Henry_dAnglebert_PdC2.txt 171 Plain-text file with the extracted tune(s)
Tune-23503-get.log 3520 Log file, useful mostly for debugging
Tune-23504-get.log 6695 Log file, useful mostly for debugging
Tune-23509-get.log 4515 Log file, useful mostly for debugging
These files should be available for 24 hours.