Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1769/Kerr_MM1-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7468-Kerr_MM1-V2.ps) >>/Users/jc/w/tmp/Tune-7468-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1769/Kerr_MM1-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-7468-Kerr_MM1-V2.abc 148 ABC music file with the extracted tune(s)
Tune-7468-Kerr_MM1-V2.ps 6 PostScript
Tune-7468-Kerr_MM1-V2.txt 148 Plain-text file with the extracted tune(s)
Tune-7468-get.log 12557 Log file, useful mostly for debugging
Tune-74681-Goulding_SSEIFA_v3.abc 155 ABC music file with the extracted tune(s)
Tune-74681-Goulding_SSEIFA_v3.pdf 2217 Portable Data Format
Tune-74681-Goulding_SSEIFA_v3.ps 6 PostScript
Tune-74681-Goulding_SSEIFA_v3.txt 155 Plain-text file with the extracted tune(s)
Tune-74681-get.log 5116 Log file, useful mostly for debugging
Tune-74683-get.log 3158 Log file, useful mostly for debugging
Tune-74689-get.log 4619 Log file, useful mostly for debugging
These files should be available for 24 hours.