Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CPC/Gow-CSR4-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4719-Gow-CSR4-abc2.ps) >>/Users/jc/w/tmp/Tune-4719-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CPC/Gow-CSR4-abc2.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-4719-Gow-CSR4-abc2.abc 149 ABC music file with the extracted tune(s)
Tune-4719-Gow-CSR4-abc2.ps 6 PostScript
Tune-4719-Gow-CSR4-abc2.txt 149 Plain-text file with the extracted tune(s)
Tune-4719-get.log 4121 Log file, useful mostly for debugging
Tune-47190-CR3-abc2.abc 158 ABC music file with the extracted tune(s)
Tune-47190-CR3-abc2.ps 6 PostScript
Tune-47190-CR3-abc2.txt 158 Plain-text file with the extracted tune(s)
Tune-47190-get.log 14119 Log file, useful mostly for debugging
Tune-47191-get.log 4706 Log file, useful mostly for debugging
Tune-47192-get.log 9073 Log file, useful mostly for debugging
Tune-47193-get.log 7810 Log file, useful mostly for debugging
Tune-47194-CR-abc2.abc 156 ABC music file with the extracted tune(s)
Tune-47194-CR-abc2.ps 6 PostScript
Tune-47194-CR-abc2.txt 156 Plain-text file with the extracted tune(s)
Tune-47194-get.log 4121 Log file, useful mostly for debugging
Tune-47195-get.log 8976 Log file, useful mostly for debugging
These files should be available for 24 hours.