Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MM4/EliasHowe_MusiciansCompanionP3-1844-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4775-EliasHowe_MusiciansCompanionP3-1844-V2.ps) >>/Users/jc/w/tmp/Tune-4775-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MM4/EliasHowe_MusiciansCompanionP3-1844-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-4775-EliasHowe_MusiciansCompanionP3-1844-V2.abc 174 ABC music file with the extracted tune(s)
Tune-4775-EliasHowe_MusiciansCompanionP3-1844-V2.ps 6 PostScript
Tune-4775-EliasHowe_MusiciansCompanionP3-1844-V2.txt 174 Plain-text file with the extracted tune(s)
Tune-4775-get.log 9103 Log file, useful mostly for debugging
Tune-47753-ViolaRuth_Pioneer.abc 153 ABC music file with the extracted tune(s)
Tune-47753-ViolaRuth_Pioneer.txt 153 Plain-text file with the extracted tune(s)
Tune-47753-get.log 3300 Log file, useful mostly for debugging
Tune-47754-get.log 7779 Log file, useful mostly for debugging
Tune-47758-get.log 1380 Log file, useful mostly for debugging
These files should be available for 24 hours.