Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/abc2/HibernianMuse-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3744-HibernianMuse-V2.ps) >>/Users/jc/w/tmp/Tune-3744-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/abc2/HibernianMuse-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
Coll_37444.log 620811 Log file, useful mostly for debugging
Coll_37447.log 157767 Log file, useful mostly for debugging
Tune-3744-HibernianMuse-V2.abc 153 ABC music file with the extracted tune(s)
Tune-3744-HibernianMuse-V2.ps 6 PostScript
Tune-3744-HibernianMuse-V2.txt 153 Plain-text file with the extracted tune(s)
Tune-3744-get.log 4190 Log file, useful mostly for debugging
Tune-37440-get.log 12937 Log file, useful mostly for debugging
Tune-37442-get.log 4853 Log file, useful mostly for debugging
Tune-37443-MichaelDabney_12Minuets12Dances-1760-V1.abc 176 ABC music file with the extracted tune(s)
Tune-37443-MichaelDabney_12Minuets12Dances-1760-V1.txt 176 Plain-text file with the extracted tune(s)
Tune-37443-get.log 7844 Log file, useful mostly for debugging
Tune-37447-get.log 8623 Log file, useful mostly for debugging
Tune-37448-get.log 11915 Log file, useful mostly for debugging
Tune-37449-get.log 12804 Log file, useful mostly for debugging
These files should be available for 24 hours.