Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/slide/SCD_RoyGoldring_14SocialDancesFor2000.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4529-SCD_RoyGoldring_14SocialDancesFor2000.ps) >>/Users/jc/w/tmp/Tune-4529-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/slide/SCD_RoyGoldring_14SocialDancesFor2000.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-4529-SCD_RoyGoldring_14SocialDancesFor2000.abc 175 ABC music file with the extracted tune(s)
Tune-4529-SCD_RoyGoldring_14SocialDancesFor2000.ps 6 PostScript
Tune-4529-SCD_RoyGoldring_14SocialDancesFor2000.txt 175 Plain-text file with the extracted tune(s)
Tune-4529-get.log 4635 Log file, useful mostly for debugging
Tune-45290-get.log 1477 Log file, useful mostly for debugging
Tune-45296-get.log 1348 Log file, useful mostly for debugging
Tune-45299-1769_Bremner_SRCD.abc 154 ABC music file with the extracted tune(s)
Tune-45299-1769_Bremner_SRCD.ps 6 PostScript
Tune-45299-1769_Bremner_SRCD.txt 154 Plain-text file with the extracted tune(s)
Tune-45299-get.log 4142 Log file, useful mostly for debugging
These files should be available for 24 hours.