Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Kerr/MM2/2220 .abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7776-2220.ps) >>/Users/jc/w/tmp/Tune-7776-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kerr/MM2/2220 .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_77766.log 934 Log file, useful mostly for debugging
Tune-7776-2220.abc 146 ABC music file with the extracted tune(s)
Tune-7776-2220.ps 6 PostScript
Tune-7776-2220.txt 146 Plain-text file with the extracted tune(s)
Tune-7776-get.log 3970 Log file, useful mostly for debugging
Tune-77762-_.abc 139 ABC music file with the extracted tune(s)
Tune-77762-_.pdf 2217 Portable Data Format
Tune-77762-_.ps 6 PostScript
Tune-77762-_.txt 139 Plain-text file with the extracted tune(s)
Tune-77762-get.log 16063 Log file, useful mostly for debugging
Tune-77763-get.log 4051 Log file, useful mostly for debugging
Tune-77765-24CountryDances_1809_Button_Whitaker.abc 174 ABC music file with the extracted tune(s)
Tune-77765-24CountryDances_1809_Button_Whitaker.txt 174 Plain-text file with the extracted tune(s)
Tune-77765-get.log 3662 Log file, useful mostly for debugging
These files should be available for 24 hours.