Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book06/24CountryDances_1818_Button_Whitaker.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9891-24CountryDances_1818_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-9891-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book06/24CountryDances_1818_Button_Whitaker.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_98919.log 648811 Log file, useful mostly for debugging
Find_98915.log 1415 Log file, useful mostly for debugging
Tune-9891-24CountryDances_1809_Cahusac_JC.abc 168 ABC music file with the extracted tune(s)
Tune-9891-24CountryDances_1809_Cahusac_JC.ps 6 PostScript
Tune-9891-24CountryDances_1809_Cahusac_JC.txt 168 Plain-text file with the extracted tune(s)
Tune-9891-24CountryDances_1818_Button_Whitaker.abc 175 ABC music file with the extracted tune(s)
Tune-9891-24CountryDances_1818_Button_Whitaker.ps 6 PostScript
Tune-9891-24CountryDances_1818_Button_Whitaker.txt 175 Plain-text file with the extracted tune(s)
Tune-9891-get.log 9039 Log file, useful mostly for debugging
Tune-98910-24FavouriteDances_1779_Straight.abc 168 ABC music file with the extracted tune(s)
Tune-98910-24FavouriteDances_1779_Straight.txt 168 Plain-text file with the extracted tune(s)
Tune-98910-get.log 4834 Log file, useful mostly for debugging
Tune-98914-get.log 4154 Log file, useful mostly for debugging
Tune-98915-get.log 4400 Log file, useful mostly for debugging
Tune-98918-JohnJohnson_ChoiceCollectionVol8-V1.abc 172 ABC music file with the extracted tune(s)
Tune-98918-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-98918-JohnJohnson_ChoiceCollectionVol8-V1.txt 172 Plain-text file with the extracted tune(s)
Tune-98918-get.log 4518 Log file, useful mostly for debugging
Tune-98919-get.log 4345 Log file, useful mostly for debugging
These files should be available for 24 hours.