Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/ScotsMusicalMuseumV5/BostonCollection.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9049-BostonCollection.ps) >>/Users/jc/w/tmp/Tune-9049-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ScotsMusicalMuseumV5/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
Coll_90490.log 398485 Log file, useful mostly for debugging
Tune-9049-BostonCollection.abc 169 ABC music file with the extracted tune(s)
Tune-9049-BostonCollection.ps 6 PostScript
Tune-9049-BostonCollection.txt 169 Plain-text file with the extracted tune(s)
Tune-9049-get.log 4288 Log file, useful mostly for debugging
Tune-90491-get.log 5356 Log file, useful mostly for debugging
Tune-90492-get.log 5294 Log file, useful mostly for debugging
Tune-90493-get.log 5768 Log file, useful mostly for debugging
Tune-90495-get.log 1405 Log file, useful mostly for debugging
Tune-90499-Hamilton_HUTB2-1846-V2.abc 159 ABC music file with the extracted tune(s)
Tune-90499-Hamilton_HUTB2-1846-V2.txt 159 Plain-text file with the extracted tune(s)
Tune-90499-get.log 3400 Log file, useful mostly for debugging
These files should be available for 24 hours.