Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Gow/CR2-abc1.abc/CR1-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6891-CR1-abc1.ps) >>/Users/jc/w/tmp/Tune-6891-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CR2-abc1.abc/CR1-abc1.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-6891-CR1-abc1.abc 157 ABC music file with the extracted tune(s)
Tune-6891-CR1-abc1.ps 6 PostScript
Tune-6891-CR1-abc1.txt 157 Plain-text file with the extracted tune(s)
Tune-6891-get.log 4094 Log file, useful mostly for debugging
Tune-68910-get.log 17573 Log file, useful mostly for debugging
Tune-68911-get.log 4468 Log file, useful mostly for debugging
Tune-68916-get.log 5296 Log file, useful mostly for debugging
Tune-68917-get.log 5231 Log file, useful mostly for debugging
Tune-68918-24CountryDances_1782_Thompson.abc 174 ABC music file with the extracted tune(s)
Tune-68918-24CountryDances_1782_Thompson.ps 6 PostScript
Tune-68918-24CountryDances_1782_Thompson.txt 174 Plain-text file with the extracted tune(s)
Tune-68918-get.log 8414 Log file, useful mostly for debugging
These files should be available for 24 hours.