Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1811/Kerr_MM4-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2822-Kerr_MM4-V2.ps) >>/Users/jc/w/tmp/Tune-2822-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1811/Kerr_MM4-V2.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-2822-20333_Prince_Bluchers_Waltz-001.svg 44776 Scalable Vector Graphics format
Tune-2822-20333_Prince_Bluchers_Waltz.abc 1127 ABC music file with the extracted tune(s)
Tune-2822-20333_Prince_Bluchers_Waltz.txt 1127 Plain-text file with the extracted tune(s)
Tune-2822-Kerr_MM4-V2.abc 148 ABC music file with the extracted tune(s)
Tune-2822-Kerr_MM4-V2.ps 6 PostScript
Tune-2822-Kerr_MM4-V2.txt 148 Plain-text file with the extracted tune(s)
Tune-2822-get.log 8730 Log file, useful mostly for debugging
Tune-28228-get.log 4668 Log file, useful mostly for debugging
Tune-28229-JamesOswald_CPC-abc2.abc 157 ABC music file with the extracted tune(s)
Tune-28229-JamesOswald_CPC-abc2.ps 6 PostScript
Tune-28229-JamesOswald_CPC-abc2.txt 157 Plain-text file with the extracted tune(s)
Tune-28229-get.log 4322 Log file, useful mostly for debugging
These files should be available for 24 hours.