Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-6017-slurs.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9621-Tune-6017-slurs.ps) >>/Users/jc/w/tmp/Tune-9621-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/Riddell/tmp/Tune-6017-slurs.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Form_96213.log 805 Log file, useful mostly for debugging
Tune-9621-Tune-6017-slurs.abc 167 ABC music file with the extracted tune(s)
Tune-9621-Tune-6017-slurs.ps 6 PostScript
Tune-9621-Tune-6017-slurs.txt 167 Plain-text file with the extracted tune(s)
Tune-9621-get.log 4257 Log file, useful mostly for debugging
Tune-96212-get.log 1391 Log file, useful mostly for debugging
Tune-96213-24CountryDances_1782_Thompson.abc 178 ABC music file with the extracted tune(s)
Tune-96213-24CountryDances_1782_Thompson.ps 6 PostScript
Tune-96213-24CountryDances_1782_Thompson.txt 178 Plain-text file with the extracted tune(s)
Tune-96213-get.log 4583 Log file, useful mostly for debugging
Tune-96216-get.log 1434 Log file, useful mostly for debugging
These files should be available for 24 hours.