Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1796/Gow-CSR3-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7178-Gow-CSR3-abc1.ps) >>/Users/jc/w/tmp/Tune-7178-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1796/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
Tune-7178-Gow-CSR3-abc1.abc 150 ABC music file with the extracted tune(s)
Tune-7178-Gow-CSR3-abc1.ps 6 PostScript
Tune-7178-Gow-CSR3-abc1.txt 150 Plain-text file with the extracted tune(s)
Tune-7178-get.log 8135 Log file, useful mostly for debugging
Tune-71782-get.log 4249 Log file, useful mostly for debugging
Tune-71783-get.log 3090 Log file, useful mostly for debugging
Tune-71784-get.log 18532 Log file, useful mostly for debugging
Tune-71786-JamesJohnson_ScotsMusicalMuseumV5-V2.abc 173 ABC music file with the extracted tune(s)
Tune-71786-JamesJohnson_ScotsMusicalMuseumV5-V2.pdf 2217 Portable Data Format
Tune-71786-JamesJohnson_ScotsMusicalMuseumV5-V2.ps 6 PostScript
Tune-71786-JamesJohnson_ScotsMusicalMuseumV5-V2.txt 173 Plain-text file with the extracted tune(s)
Tune-71786-_.abc 138 ABC music file with the extracted tune(s)
Tune-71786-_.txt 138 Plain-text file with the extracted tune(s)
Tune-71786-get.log 10018 Log file, useful mostly for debugging
Tune-71788-get.log 4333 Log file, useful mostly for debugging
These files should be available for 24 hours.