Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/abc1/BostonCollection.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6649-BostonCollection.ps) >>/Users/jc/w/tmp/Tune-6649-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/abc1/BostonCollection.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-6649-BostonCollection.abc 153 ABC music file with the extracted tune(s)
Tune-6649-BostonCollection.ps 6 PostScript
Tune-6649-BostonCollection.txt 153 Plain-text file with the extracted tune(s)
Tune-6649-get.log 4194 Log file, useful mostly for debugging
Tune-66490-get.log 4279 Log file, useful mostly for debugging
Tune-66492-10424_East_Stoughton_Assembly.abc 675 ABC music file with the extracted tune(s)
Tune-66492-10424_East_Stoughton_Assembly.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-66492-10424_East_Stoughton_Assembly.ps 35120 PostScript
Tune-66492-10424_East_Stoughton_Assembly.txt 675 Plain-text file with the extracted tune(s)
Tune-66492-get.log 5922 Log file, useful mostly for debugging
These files should be available for 24 hours.