Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1803/ThomasMarsden.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7664-ThomasMarsden.ps) >>/Users/jc/w/tmp/Tune-7664-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1803/ThomasMarsden.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-7664-ThomasMarsden.abc 150 ABC music file with the extracted tune(s)
Tune-7664-ThomasMarsden.ps 6 PostScript
Tune-7664-ThomasMarsden.txt 150 Plain-text file with the extracted tune(s)
Tune-7664-get.log 4131 Log file, useful mostly for debugging
Tune-76641-get.log 10114 Log file, useful mostly for debugging
Tune-76642-get.log 1406 Log file, useful mostly for debugging
Tune-76643-AMHSI-abc1.abc 147 ABC music file with the extracted tune(s)
Tune-76643-AMHSI-abc1.ps 6 PostScript
Tune-76643-AMHSI-abc1.txt 147 Plain-text file with the extracted tune(s)
Tune-76643-get.log 4116 Log file, useful mostly for debugging
Tune-76644-CSGBT_1794-V1.abc 150 ABC music file with the extracted tune(s)
Tune-76644-CSGBT_1794-V1.txt 150 Plain-text file with the extracted tune(s)
Tune-76644-get.log 3238 Log file, useful mostly for debugging
Tune-76648-ERM-V1.abc 143 ABC music file with the extracted tune(s)
Tune-76648-ERM-V1.ps 6 PostScript
Tune-76648-ERM-V1.txt 143 Plain-text file with the extracted tune(s)
Tune-76648-get.log 5317 Log file, useful mostly for debugging
Tune-76649-24CountryDances_1793_Preston.abc 168 ABC music file with the extracted tune(s)
Tune-76649-24CountryDances_1793_Preston.ps 6 PostScript
Tune-76649-24CountryDances_1793_Preston.txt 168 Plain-text file with the extracted tune(s)
Tune-76649-get.log 4389 Log file, useful mostly for debugging
These files should be available for 24 hours.