Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CNS/CDSS_CDoT.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8139-CDSS_CDoT.ps) >>/Users/jc/w/tmp/Tune-8139-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CNS/CDSS_CDoT.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_81393.log 244485 Log file, useful mostly for debugging
Tune-8139-CDSS_CDoT.abc 145 ABC music file with the extracted tune(s)
Tune-8139-CDSS_CDoT.ps 6 PostScript
Tune-8139-CDSS_CDoT.txt 145 Plain-text file with the extracted tune(s)
Tune-8139-get.log 4039 Log file, useful mostly for debugging
Tune-81391-get.log 9068 Log file, useful mostly for debugging
Tune-81392-get.log 10128 Log file, useful mostly for debugging
Tune-81393-get.log 5400 Log file, useful mostly for debugging
Tune-81395-get.log 4753 Log file, useful mostly for debugging
Tune-81396-get.log 7667 Log file, useful mostly for debugging
Tune-81397-get.log 12910 Log file, useful mostly for debugging
Tune-81398-get.log 15030 Log file, useful mostly for debugging
These files should be available for 24 hours.