Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1793/CTftF.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5567-CTftF.ps) >>/Users/jc/w/tmp/Tune-5567-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1793/CTftF.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-5567-CTftF.abc 142 ABC music file with the extracted tune(s)
Tune-5567-CTftF.ps 6 PostScript
Tune-5567-CTftF.txt 142 Plain-text file with the extracted tune(s)
Tune-5567-get.log 3963 Log file, useful mostly for debugging
Tune-55674-get.log 3996 Log file, useful mostly for debugging
Tune-55676-cresc.abc 142 ABC music file with the extracted tune(s)
Tune-55676-cresc.txt 142 Plain-text file with the extracted tune(s)
Tune-55676-get.log 3094 Log file, useful mostly for debugging
Tune-55677-Gallini_NewColl44Cot2.abc 158 ABC music file with the extracted tune(s)
Tune-55677-Gallini_NewColl44Cot2.ps 6 PostScript
Tune-55677-Gallini_NewColl44Cot2.txt 158 Plain-text file with the extracted tune(s)
Tune-55677-get.log 4222 Log file, useful mostly for debugging
Tune-55678-Feuillet_Essex_FtFIoD2.abc 159 ABC music file with the extracted tune(s)
Tune-55678-Feuillet_Essex_FtFIoD2.pdf 2217 Portable Data Format
Tune-55678-Feuillet_Essex_FtFIoD2.ps 6 PostScript
Tune-55678-Feuillet_Essex_FtFIoD2.txt 159 Plain-text file with the extracted tune(s)
Tune-55678-get.log 5232 Log file, useful mostly for debugging
These files should be available for 24 hours.