Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/abc2/CDSS_Gems.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3490-CDSS_Gems.ps) >>/Users/jc/w/tmp/Tune-3490-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/abc2/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
Find_34908.log 1269 Log file, useful mostly for debugging
Find_34909.log 1700 Log file, useful mostly for debugging
Form_34903.log 912 Log file, useful mostly for debugging
Tune-3490-CDSS_Gems.abc 146 ABC music file with the extracted tune(s)
Tune-3490-CDSS_Gems.ps 6 PostScript
Tune-3490-CDSS_Gems.txt 146 Plain-text file with the extracted tune(s)
Tune-3490-get.log 4043 Log file, useful mostly for debugging
Tune-34901-Goulding_SSEIFA_v1.abc 155 ABC music file with the extracted tune(s)
Tune-34901-Goulding_SSEIFA_v1.txt 155 Plain-text file with the extracted tune(s)
Tune-34901-get.log 3332 Log file, useful mostly for debugging
Tune-34902-get.log 4002 Log file, useful mostly for debugging
Tune-34903-get.log 4550 Log file, useful mostly for debugging
Tune-34905-get.log 4883 Log file, useful mostly for debugging
These files should be available for 24 hours.