Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Ruby/SCD_Book49-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3165-SCD_Book49-V1.ps) >>/Users/jc/w/tmp/Tune-3165-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Ruby/SCD_Book49-V1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_3165.log 1139 Log file, useful mostly for debugging
Tune-3165-SCD_Book49-V1.abc 150 ABC music file with the extracted tune(s)
Tune-3165-SCD_Book49-V1.ps 6 PostScript
Tune-3165-SCD_Book49-V1.txt 150 Plain-text file with the extracted tune(s)
Tune-3165-get.log 4131 Log file, useful mostly for debugging
Tune-31653-get.log 4815 Log file, useful mostly for debugging
Tune-31654-get.log 5006 Log file, useful mostly for debugging
Tune-31656-24CountryDances_1767_Thompson.abc 170 ABC music file with the extracted tune(s)
Tune-31656-24CountryDances_1767_Thompson.pdf 2217 Portable Data Format
Tune-31656-24CountryDances_1767_Thompson.ps 6 PostScript
Tune-31656-24CountryDances_1767_Thompson.txt 170 Plain-text file with the extracted tune(s)
Tune-31656-get.log 8621 Log file, useful mostly for debugging
Tune-31659-get.log 28762 Log file, useful mostly for debugging
These files should be available for 24 hours.