Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/song/HibernianMuse-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6975-HibernianMuse-V1.ps) >>/Users/jc/w/tmp/Tune-6975-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/song/HibernianMuse-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_69751.log 1255 Log file, useful mostly for debugging
Tune-6975-HibernianMuse-V1.abc 153 ABC music file with the extracted tune(s)
Tune-6975-HibernianMuse-V1.ps 6 PostScript
Tune-6975-HibernianMuse-V1.txt 153 Plain-text file with the extracted tune(s)
Tune-6975-get.log 8061 Log file, useful mostly for debugging
Tune-69750-get.log 1446 Log file, useful mostly for debugging
Tune-69754-get.log 6056 Log file, useful mostly for debugging
Tune-69757-021_Irish_Trott.abc 645 ABC music file with the extracted tune(s)
Tune-69757-021_Irish_Trott.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-69757-021_Irish_Trott.ps 33476 PostScript
Tune-69757-021_Irish_Trott.txt 645 Plain-text file with the extracted tune(s)
Tune-69757-get.log 5383 Log file, useful mostly for debugging
Tune-69758-get.log 7368 Log file, useful mostly for debugging
These files should be available for 24 hours.