Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/NewWineInOldBottles/Gow-CR-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8710-Gow-CR-abc2.ps) >>/Users/jc/w/tmp/Tune-8710-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/NewWineInOldBottles/Gow-CR-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-8710-Gow-CR-abc2.abc 163 ABC music file with the extracted tune(s)
Tune-8710-Gow-CR-abc2.ps 6 PostScript
Tune-8710-Gow-CR-abc2.txt 163 Plain-text file with the extracted tune(s)
Tune-8710-get.log 4173 Log file, useful mostly for debugging
Tune-87101-CR3-abc2.abc 158 ABC music file with the extracted tune(s)
Tune-87101-CR3-abc2.ps 6 PostScript
Tune-87101-CR3-abc2.txt 158 Plain-text file with the extracted tune(s)
Tune-87101-get.log 4029 Log file, useful mostly for debugging
Tune-87103-24CountryDances_1800_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-87103-24CountryDances_1800_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-87103-get.log 3522 Log file, useful mostly for debugging
Tune-87104-get.log 2868 Log file, useful mostly for debugging
Tune-87108-get.log 97836 Log file, useful mostly for debugging
These files should be available for 24 hours.