Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/save/Kerr_MM4-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3786-Kerr_MM4-V2.ps) >>/Users/jc/w/tmp/Tune-3786-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/save/Kerr_MM4-V2.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-3786-Kerr_MM4-V2.abc 148 ABC music file with the extracted tune(s)
Tune-3786-Kerr_MM4-V2.ps 6 PostScript
Tune-3786-Kerr_MM4-V2.txt 148 Plain-text file with the extracted tune(s)
Tune-3786-get.log 4089 Log file, useful mostly for debugging
Tune-37860-JamesJohnson_ScotsMusicalMuseumV4-V2.abc 173 ABC music file with the extracted tune(s)
Tune-37860-JamesJohnson_ScotsMusicalMuseumV4-V2.ps 6 PostScript
Tune-37860-JamesJohnson_ScotsMusicalMuseumV4-V2.txt 173 Plain-text file with the extracted tune(s)
Tune-37860-get.log 11288 Log file, useful mostly for debugging
Tune-37861-get.log 3386 Log file, useful mostly for debugging
Tune-37866-24CountryDances_1798_Bland_Weller.abc 170 ABC music file with the extracted tune(s)
Tune-37866-24CountryDances_1798_Bland_Weller.pdf 2217 Portable Data Format
Tune-37866-24CountryDances_1798_Bland_Weller.ps 6 PostScript
Tune-37866-24CountryDances_1798_Bland_Weller.txt 170 Plain-text file with the extracted tune(s)
Tune-37866-get.log 5549 Log file, useful mostly for debugging
Tune-37869-get.log 4127 Log file, useful mostly for debugging
These files should be available for 24 hours.