Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM2/HibernianMuse-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6061-HibernianMuse-V2.ps) >>/Users/jc/w/tmp/Tune-6061-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM2/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
Tune-6061-HibernianMuse-V2.abc 152 ABC music file with the extracted tune(s)
Tune-6061-HibernianMuse-V2.ps 6 PostScript
Tune-6061-HibernianMuse-V2.txt 152 Plain-text file with the extracted tune(s)
Tune-6061-get.log 68873 Log file, useful mostly for debugging
Tune-60613-get.log 18230 Log file, useful mostly for debugging
Tune-60614-get.log 3999 Log file, useful mostly for debugging
Tune-60615-RSCDS_Graded2.abc 150 ABC music file with the extracted tune(s)
Tune-60615-RSCDS_Graded2.ps 6 PostScript
Tune-60615-RSCDS_Graded2.txt 150 Plain-text file with the extracted tune(s)
Tune-60615-get.log 8165 Log file, useful mostly for debugging
These files should be available for 24 hours.