Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/square/EliasHowe_MusiciansCompanionP1-1842-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6446-EliasHowe_MusiciansCompanionP1-1842-V1.ps) >>/Users/jc/w/tmp/Tune-6446-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/square/EliasHowe_MusiciansCompanionP1-1842-V1.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-6446-EliasHowe_MusiciansCompanionP1-1842-V1.abc 177 ABC music file with the extracted tune(s)
Tune-6446-EliasHowe_MusiciansCompanionP1-1842-V1.ps 6 PostScript
Tune-6446-EliasHowe_MusiciansCompanionP1-1842-V1.txt 177 Plain-text file with the extracted tune(s)
Tune-6446-get.log 4666 Log file, useful mostly for debugging
Tune-64460-get.log 5008 Log file, useful mostly for debugging
Tune-64461-CSRHW-abc1.abc 149 ABC music file with the extracted tune(s)
Tune-64461-CSRHW-abc1.ps 6 PostScript
Tune-64461-CSRHW-abc1.txt 149 Plain-text file with the extracted tune(s)
Tune-64461-get.log 4122 Log file, useful mostly for debugging
Tune-64462-get.log 7011 Log file, useful mostly for debugging
Tune-64463-get.log 13838 Log file, useful mostly for debugging
Tune-64464-get.log 3854 Log file, useful mostly for debugging
Tune-64465-get.log 10089 Log file, useful mostly for debugging
Tune-64466-get.log 9574 Log file, useful mostly for debugging
Tune-64467-get.log 1298 Log file, useful mostly for debugging
These files should be available for 24 hours.