Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM3/SkillernChalloner_PCD2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6063-SkillernChalloner_PCD2.ps) >>/Users/jc/w/tmp/Tune-6063-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM3/SkillernChalloner_PCD2.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-6063-SkillernChalloner_PCD2.abc 158 ABC music file with the extracted tune(s)
Tune-6063-SkillernChalloner_PCD2.ps 6 PostScript
Tune-6063-SkillernChalloner_PCD2.txt 158 Plain-text file with the extracted tune(s)
Tune-6063-get.log 4308 Log file, useful mostly for debugging
Tune-60631-get.log 5495 Log file, useful mostly for debugging
Tune-60635-HibernianMuse-V2.abc 153 ABC music file with the extracted tune(s)
Tune-60635-HibernianMuse-V2.ps 6 PostScript
Tune-60635-HibernianMuse-V2.txt 153 Plain-text file with the extracted tune(s)
Tune-60635-get.log 4236 Log file, useful mostly for debugging
Tune-60637-get.log 1442 Log file, useful mostly for debugging
Tune-60638-get.log 4631 Log file, useful mostly for debugging
These files should be available for 24 hours.