Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Potpourri/JamesJohnson_ScotsMusicalMuseumV5-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6521-JamesJohnson_ScotsMusicalMuseumV5-V2.ps) >>/Users/jc/w/tmp/Tune-6521-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Potpourri/JamesJohnson_ScotsMusicalMuseumV5-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
Form_65215.log 828 Log file, useful mostly for debugging
Tune-6521-JamesJohnson_ScotsMusicalMuseumV5-V2.abc 178 ABC music file with the extracted tune(s)
Tune-6521-JamesJohnson_ScotsMusicalMuseumV5-V2.ps 6 PostScript
Tune-6521-JamesJohnson_ScotsMusicalMuseumV5-V2.txt 178 Plain-text file with the extracted tune(s)
Tune-6521-get.log 4638 Log file, useful mostly for debugging
Tune-65211-get.log 3382 Log file, useful mostly for debugging
Tune-65212-get.log 5463 Log file, useful mostly for debugging
Tune-65215-get.log 4110 Log file, useful mostly for debugging
Tune-65217-get.log 1462 Log file, useful mostly for debugging
These files should be available for 24 hours.