Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1753/Kohlers.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4253-Kohlers.ps) >>/Users/jc/w/tmp/Tune-4253-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1753/Kohlers.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_42536.log 277305 Log file, useful mostly for debugging
Tune-4253-24CountryDances_1826_Goulding_dAlmaine.abc 178 ABC music file with the extracted tune(s)
Tune-4253-24CountryDances_1826_Goulding_dAlmaine.ps 6 PostScript
Tune-4253-24CountryDances_1826_Goulding_dAlmaine.txt 178 Plain-text file with the extracted tune(s)
Tune-4253-Kohlers.abc 144 ABC music file with the extracted tune(s)
Tune-4253-Kohlers.ps 6 PostScript
Tune-4253-Kohlers.txt 144 Plain-text file with the extracted tune(s)
Tune-4253-get.log 8583 Log file, useful mostly for debugging
Tune-42531-Kohlers3.abc 144 ABC music file with the extracted tune(s)
Tune-42531-Kohlers3.txt 144 Plain-text file with the extracted tune(s)
Tune-42531-get.log 3140 Log file, useful mostly for debugging
These files should be available for 24 hours.