Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/4NCD/24CountryDances_1767_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2655-24CountryDances_1767_Thompson.ps) >>/Users/jc/w/tmp/Tune-2655-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/4NCD/24CountryDances_1767_Thompson.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-2655-24CountryDances_1767_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-2655-24CountryDances_1767_Thompson.ps 6 PostScript
Tune-2655-24CountryDances_1767_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-2655-get.log 8360 Log file, useful mostly for debugging
Tune-26553-get.log 5609 Log file, useful mostly for debugging
Tune-26554-get.log 10239 Log file, useful mostly for debugging
Tune-26556-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.abc 200 ABC music file with the extracted tune(s)
Tune-26556-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.pdf 2217 Portable Data Format
Tune-26556-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.ps 6 PostScript
Tune-26556-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.txt 200 Plain-text file with the extracted tune(s)
Tune-26556-get.log 10793 Log file, useful mostly for debugging
Tune-26557-ThomasMarsden.abc 150 ABC music file with the extracted tune(s)
Tune-26557-ThomasMarsden.pdf 2217 Portable Data Format
Tune-26557-ThomasMarsden.ps 6 PostScript
Tune-26557-ThomasMarsden.txt 150 Plain-text file with the extracted tune(s)
Tune-26557-get.log 4969 Log file, useful mostly for debugging
Tune-26558-get.log 4821 Log file, useful mostly for debugging
Tune-26558-newpage.abc 149 ABC music file with the extracted tune(s)
Tune-26558-newpage.pdf 2217 Portable Data Format
Tune-26558-newpage.ps 6 PostScript
Tune-26558-newpage.txt 149 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.