Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/jpg/JamesOswald_CPC-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-69429-JamesOswald_CPC-abc2.ps) >>/Users/jc/w/tmp/Tune-69429-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/jpg/JamesOswald_CPC-abc2.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-69429-JamesOswald_CPC-abc2.abc 156 ABC music file with the extracted tune(s)
Tune-69429-JamesOswald_CPC-abc2.ps 6 PostScript
Tune-69429-JamesOswald_CPC-abc2.txt 156 Plain-text file with the extracted tune(s)
Tune-69429-Mr_Beveridges_Maggot.abc 1524 ABC music file with the extracted tune(s)
Tune-69429-Mr_Beveridges_Maggot.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-69429-Mr_Beveridges_Maggot.ps 34959 PostScript
Tune-69429-Mr_Beveridges_Maggot.txt 1524 Plain-text file with the extracted tune(s)
Tune-69429-get.log 9780 Log file, useful mostly for debugging
These files should be available for 24 hours.