Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/ONeills/Rare_Small/0042_the_Hay_Makers.abc/book0"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4827-book0.ps) >>/Users/jc/w/tmp/Tune-4827-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ONeills/Rare_Small/0042_the_Hay_Makers.abc/book0

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_48275.log 270281 Log file, useful mostly for debugging
Coll_48279.log 263256 Log file, useful mostly for debugging
Form_48278.log 2499 Log file, useful mostly for debugging
Tune-4827-book0.abc 176 ABC music file with the extracted tune(s)
Tune-4827-book0.ps 6 PostScript
Tune-4827-book0.txt 176 Plain-text file with the extracted tune(s)
Tune-4827-get.log 4119 Log file, useful mostly for debugging
Tune-48270-get.log 3704 Log file, useful mostly for debugging
Tune-48275-24NewCotillons_1770_Longman.abc 175 ABC music file with the extracted tune(s)
Tune-48275-24NewCotillons_1770_Longman.ps 6 PostScript
Tune-48275-24NewCotillons_1770_Longman.txt 175 Plain-text file with the extracted tune(s)
Tune-48275-get.log 4412 Log file, useful mostly for debugging
Tune-48276-get.log 5222 Log file, useful mostly for debugging
Tune-48279-get.log 6444 Log file, useful mostly for debugging
These files should be available for 24 hours.