Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/NS_Anniv50/JohnFrench.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9734-JohnFrench.ps) >>/Users/jc/w/tmp/Tune-9734-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/NS_Anniv50/JohnFrench.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_97340.log 166217 Log file, useful mostly for debugging
Tune-9734-JohnFrench.abc 153 ABC music file with the extracted tune(s)
Tune-9734-JohnFrench.ps 6 PostScript
Tune-9734-JohnFrench.txt 153 Plain-text file with the extracted tune(s)
Tune-9734-get.log 4102 Log file, useful mostly for debugging
Tune-97340-get.log 3547 Log file, useful mostly for debugging
Tune-97341-ThomasMarsden.abc 154 ABC music file with the extracted tune(s)
Tune-97341-ThomasMarsden.txt 154 Plain-text file with the extracted tune(s)
Tune-97341-get.log 3262 Log file, useful mostly for debugging
Tune-97345-SCD_Book49-V1.abc 154 ABC music file with the extracted tune(s)
Tune-97345-SCD_Book49-V1.txt 154 Plain-text file with the extracted tune(s)
Tune-97345-get.log 3262 Log file, useful mostly for debugging
These files should be available for 24 hours.