Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Potpourri/George_Meikle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6493-George_Meikle.ps) >>/Users/jc/w/tmp/Tune-6493-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Potpourri/George_Meikle.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-6493-George_Meikle.abc 155 ABC music file with the extracted tune(s)
Tune-6493-George_Meikle.ps 6 PostScript
Tune-6493-George_Meikle.txt 155 Plain-text file with the extracted tune(s)
Tune-6493-get.log 8126 Log file, useful mostly for debugging
Tune-64930-get.log 4187 Log file, useful mostly for debugging
Tune-64931-24CountryDances_1779_Thompson.abc 170 ABC music file with the extracted tune(s)
Tune-64931-24CountryDances_1779_Thompson.ps 6 PostScript
Tune-64931-24CountryDances_1779_Thompson.txt 170 Plain-text file with the extracted tune(s)
Tune-64931-get.log 8585 Log file, useful mostly for debugging
Tune-64938-get.log 8516 Log file, useful mostly for debugging
These files should be available for 24 hours.