Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1806/HibernianMuse-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8531-HibernianMuse-V1.ps) >>/Users/jc/w/tmp/Tune-8531-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1806/HibernianMuse-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-8531-HibernianMuse-V1.abc 153 ABC music file with the extracted tune(s)
Tune-8531-HibernianMuse-V1.ps 6 PostScript
Tune-8531-HibernianMuse-V1.txt 153 Plain-text file with the extracted tune(s)
Tune-8531-get.log 9764 Log file, useful mostly for debugging
Tune-85310-get.log 4908 Log file, useful mostly for debugging
Tune-85311-get.log 9788 Log file, useful mostly for debugging
Tune-85312-get.log 14326 Log file, useful mostly for debugging
Tune-85313-CSGBT_1794-V1.abc 149 ABC music file with the extracted tune(s)
Tune-85313-CSGBT_1794-V1.txt 149 Plain-text file with the extracted tune(s)
Tune-85313-get.log 3234 Log file, useful mostly for debugging
Tune-85314-get.log 7759 Log file, useful mostly for debugging
Tune-85315-get.log 10853 Log file, useful mostly for debugging
Tune-85317-get.log 1386 Log file, useful mostly for debugging
These files should be available for 24 hours.