Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Sources.html/cresc.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8780-cresc.ps) >>/Users/jc/w/tmp/Tune-8780-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Sources.html/cresc.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-8780-cresc.abc 150 ABC music file with the extracted tune(s)
Tune-8780-cresc.ps 6 PostScript
Tune-8780-cresc.txt 150 Plain-text file with the extracted tune(s)
Tune-8780-get.log 9227 Log file, useful mostly for debugging
Tune-87800-get.log 9771 Log file, useful mostly for debugging
Tune-87805-JamesJohnson_ScotsMusicalMuseumV4-V2.abc 178 ABC music file with the extracted tune(s)
Tune-87805-JamesJohnson_ScotsMusicalMuseumV4-V2.pdf 2217 Portable Data Format
Tune-87805-JamesJohnson_ScotsMusicalMuseumV4-V2.ps 6 PostScript
Tune-87805-JamesJohnson_ScotsMusicalMuseumV4-V2.txt 178 Plain-text file with the extracted tune(s)
Tune-87805-get.log 5668 Log file, useful mostly for debugging
Tune-87809-Glen2.abc 141 ABC music file with the extracted tune(s)
Tune-87809-Glen2.ps 6 PostScript
Tune-87809-Glen2.txt 141 Plain-text file with the extracted tune(s)
Tune-87809-get.log 13728 Log file, useful mostly for debugging
These files should be available for 24 hours.