Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1850/Straight_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4640-Straight_Skillern.ps) >>/Users/jc/w/tmp/Tune-4640-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1850/Straight_Skillern.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_46407.log 128613 Log file, useful mostly for debugging
Find_46404.log 1470 Log file, useful mostly for debugging
Tune-4640-Straight_Skillern.abc 154 ABC music file with the extracted tune(s)
Tune-4640-Straight_Skillern.ps 6 PostScript
Tune-4640-Straight_Skillern.txt 154 Plain-text file with the extracted tune(s)
Tune-4640-get.log 4211 Log file, useful mostly for debugging
Tune-46400-24CountryDances_1809_Cahusac_FTM.abc 171 ABC music file with the extracted tune(s)
Tune-46400-24CountryDances_1809_Cahusac_FTM.ps 6 PostScript
Tune-46400-24CountryDances_1809_Cahusac_FTM.txt 171 Plain-text file with the extracted tune(s)
Tune-46400-get.log 4612 Log file, useful mostly for debugging
Tune-46402-get.log 1460 Log file, useful mostly for debugging
Tune-46408-ViolaRuth_Pioneer.abc 183 ABC music file with the extracted tune(s)
Tune-46408-ViolaRuth_Pioneer.txt 183 Plain-text file with the extracted tune(s)
Tune-46408-get.log 3488 Log file, useful mostly for debugging
These files should be available for 24 hours.