Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1792/SkillernChalloner_PCD2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2556-SkillernChalloner_PCD2.ps) >>/Users/jc/w/tmp/Tune-2556-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1792/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-2556-SkillernChalloner_PCD2.abc 159 ABC music file with the extracted tune(s)
Tune-2556-SkillernChalloner_PCD2.ps 6 PostScript
Tune-2556-SkillernChalloner_PCD2.txt 159 Plain-text file with the extracted tune(s)
Tune-2556-get.log 13080 Log file, useful mostly for debugging
Tune-25561-get.log 4304 Log file, useful mostly for debugging
Tune-25563-get.log 8345 Log file, useful mostly for debugging
Tune-25564-get.log 4507 Log file, useful mostly for debugging
Tune-25565-get.log 4422 Log file, useful mostly for debugging
Tune-25566-get.log 5702 Log file, useful mostly for debugging
Tune-25567-get.log 8281 Log file, useful mostly for debugging
Tune-25568-get.log 5870 Log file, useful mostly for debugging
Tune-25569-get.log 4091 Log file, useful mostly for debugging
These files should be available for 24 hours.