Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/abc1/cont.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6133-cont.ps) >>/Users/jc/w/tmp/Tune-6133-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/abc1/cont.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-6133-cont.abc 141 ABC music file with the extracted tune(s)
Tune-6133-cont.ps 6 PostScript
Tune-6133-cont.txt 141 Plain-text file with the extracted tune(s)
Tune-6133-get.log 3938 Log file, useful mostly for debugging
Tune-61330-24CountryDances_1779_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-61330-24CountryDances_1779_Thompson.ps 6 PostScript
Tune-61330-24CountryDances_1779_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-61330-get.log 4515 Log file, useful mostly for debugging
Tune-61335-get.log 1300 Log file, useful mostly for debugging
Tune-61338-Thompson_V1_1751-1757_FTM.abc 162 ABC music file with the extracted tune(s)
Tune-61338-Thompson_V1_1751-1757_FTM.txt 162 Plain-text file with the extracted tune(s)
Tune-61338-get.log 3456 Log file, useful mostly for debugging
These files should be available for 24 hours.