Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Sources.html/CDSS_Gems.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4227-CDSS_Gems.ps) >>/Users/jc/w/tmp/Tune-4227-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Sources.html/CDSS_Gems.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_4227.log 812 Log file, useful mostly for debugging
Form_42272.log 819 Log file, useful mostly for debugging
Tune-4227-CDSS_Gems.abc 154 ABC music file with the extracted tune(s)
Tune-4227-CDSS_Gems.ps 6 PostScript
Tune-4227-CDSS_Gems.txt 154 Plain-text file with the extracted tune(s)
Tune-4227-get.log 4093 Log file, useful mostly for debugging
Tune-42275-get.log 1352 Log file, useful mostly for debugging
Tune-42276-get.log 7731 Log file, useful mostly for debugging
Tune-42277-get.log 5038 Log file, useful mostly for debugging
Tune-42278-get.log 1605 Log file, useful mostly for debugging
Tune-42279-get.log 9666 Log file, useful mostly for debugging
These files should be available for 24 hours.