Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Tunes/CDSS_CDoT.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3774-CDSS_CDoT.ps) >>/Users/jc/w/tmp/Tune-3774-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Tunes/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_37744.log 99399 Log file, useful mostly for debugging
Form_37742.log 976 Log file, useful mostly for debugging
Tune-3774-CDSS_CDoT.abc 147 ABC music file with the extracted tune(s)
Tune-3774-CDSS_CDoT.ps 6 PostScript
Tune-3774-CDSS_CDoT.txt 147 Plain-text file with the extracted tune(s)
Tune-3774-get.log 4051 Log file, useful mostly for debugging
Tune-37740-get.log 4113 Log file, useful mostly for debugging
Tune-37741-get.log 4133 Log file, useful mostly for debugging
Tune-37742-get.log 8191 Log file, useful mostly for debugging
Tune-37743-get.log 14670 Log file, useful mostly for debugging
Tune-37745-get.log 4239 Log file, useful mostly for debugging
Tune-37748-get.log 13794 Log file, useful mostly for debugging
Tune-37749-get.log 4969 Log file, useful mostly for debugging
These files should be available for 24 hours.