Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/air/Remick.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6928-Remick.ps) >>/Users/jc/w/tmp/Tune-6928-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/air/Remick.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-6928-Remick.abc 142 ABC music file with the extracted tune(s)
Tune-6928-Remick.ps 6 PostScript
Tune-6928-Remick.txt 142 Plain-text file with the extracted tune(s)
Tune-6928-get.log 15585 Log file, useful mostly for debugging
Tune-69280-2320_the_General_Gathering_1745.abc 712 ABC music file with the extracted tune(s)
Tune-69280-2320_the_General_Gathering_1745.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-69280-2320_the_General_Gathering_1745.ps 37495 PostScript
Tune-69280-2320_the_General_Gathering_1745.txt 712 Plain-text file with the extracted tune(s)
Tune-69280-get.log 5917 Log file, useful mostly for debugging
Tune-69287-HibernianMuse-V1.abc 154 ABC music file with the extracted tune(s)
Tune-69287-HibernianMuse-V1.ps 6 PostScript
Tune-69287-HibernianMuse-V1.txt 154 Plain-text file with the extracted tune(s)
Tune-69287-get.log 4123 Log file, useful mostly for debugging
These files should be available for 24 hours.