Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MMM1/EliasHowe_MusiciansCompanionP1-1842-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5760-EliasHowe_MusiciansCompanionP1-1842-V2.ps) >>/Users/jc/w/tmp/Tune-5760-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MMM1/EliasHowe_MusiciansCompanionP1-1842-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-5760-EliasHowe_MusiciansCompanionP1-1842-V2.abc 175 ABC music file with the extracted tune(s)
Tune-5760-EliasHowe_MusiciansCompanionP1-1842-V2.ps 6 PostScript
Tune-5760-EliasHowe_MusiciansCompanionP1-1842-V2.txt 175 Plain-text file with the extracted tune(s)
Tune-5760-get.log 14937 Log file, useful mostly for debugging
Tune-57600-get.log 11902 Log file, useful mostly for debugging
Tune-57601-get.log 4069 Log file, useful mostly for debugging
Tune-57603-11051_.abc 33 ABC music file with the extracted tune(s)
Tune-57603-11051_.ps 6 PostScript
Tune-57603-11051_.txt 33 Plain-text file with the extracted tune(s)
Tune-57603-get.log 3860 Log file, useful mostly for debugging
Tune-57606-get.log 1464 Log file, useful mostly for debugging
Tune-57608-get.log 4999 Log file, useful mostly for debugging
These files should be available for 24 hours.