Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/HUTB1/Gow-CSR3-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6774-Gow-CSR3-abc1.ps) >>/Users/jc/w/tmp/Tune-6774-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/HUTB1/Gow-CSR3-abc1.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_67744.log 927 Log file, useful mostly for debugging
Tune-6774-Gow-CSR3-abc1.abc 151 ABC music file with the extracted tune(s)
Tune-6774-Gow-CSR3-abc1.ps 6 PostScript
Tune-6774-Gow-CSR3-abc1.txt 151 Plain-text file with the extracted tune(s)
Tune-6774-get.log 4133 Log file, useful mostly for debugging
Tune-67740-cont.abc 157 ABC music file with the extracted tune(s)
Tune-67740-cont.ps 6 PostScript
Tune-67740-cont.txt 157 Plain-text file with the extracted tune(s)
Tune-67740-get.log 8570 Log file, useful mostly for debugging
Tune-67741-get.log 1411 Log file, useful mostly for debugging
Tune-67742-get.log 3857 Log file, useful mostly for debugging
Tune-67747-Kohlers3.abc 145 ABC music file with the extracted tune(s)
Tune-67747-Kohlers3.ps 6 PostScript
Tune-67747-Kohlers3.txt 145 Plain-text file with the extracted tune(s)
Tune-67747-get.log 9574 Log file, useful mostly for debugging
These files should be available for 24 hours.