Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book27/Barsanti_CoOST.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8757-Barsanti_CoOST.ps) >>/Users/jc/w/tmp/Tune-8757-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book27/Barsanti_CoOST.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-8757-Barsanti_CoOST.abc 153 ABC music file with the extracted tune(s)
Tune-8757-Barsanti_CoOST.ps 6 PostScript
Tune-8757-Barsanti_CoOST.txt 153 Plain-text file with the extracted tune(s)
Tune-8757-get.log 4162 Log file, useful mostly for debugging
Tune-87576-get.log 1270 Log file, useful mostly for debugging
Tune-87579-4176_the_Dublin_Lasses.abc 452 ABC music file with the extracted tune(s)
Tune-87579-4176_the_Dublin_Lasses.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-87579-4176_the_Dublin_Lasses.ps 34895 PostScript
Tune-87579-4176_the_Dublin_Lasses.txt 452 Plain-text file with the extracted tune(s)
Tune-87579-get.log 5524 Log file, useful mostly for debugging
These files should be available for 24 hours.