Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1758/AbrahamMackintosh.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7051-AbrahamMackintosh.ps) >>/Users/jc/w/tmp/Tune-7051-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1758/AbrahamMackintosh.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_70513.log 1527 Log file, useful mostly for debugging
Tune-7051-AbrahamMackintosh.abc 154 ABC music file with the extracted tune(s)
Tune-7051-AbrahamMackintosh.ps 6 PostScript
Tune-7051-AbrahamMackintosh.txt 154 Plain-text file with the extracted tune(s)
Tune-7051-get.log 4213 Log file, useful mostly for debugging
Tune-70512-get.log 5612 Log file, useful mostly for debugging
Tune-70516-20491_Johnny_Cope.abc 1347 ABC music file with the extracted tune(s)
Tune-70516-20491_Johnny_Cope.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-70516-20491_Johnny_Cope.ps 47382 PostScript
Tune-70516-20491_Johnny_Cope.txt 1347 Plain-text file with the extracted tune(s)
Tune-70516-get.log 5549 Log file, useful mostly for debugging
Tune-70517-get.log 3976 Log file, useful mostly for debugging
These files should be available for 24 hours.