Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/sets/CSRHW-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3629-CSRHW-abc2.ps) >>/Users/jc/w/tmp/Tune-3629-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/sets/CSRHW-abc2.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_36293.log 140976 Log file, useful mostly for debugging
Form_36296.log 958 Log file, useful mostly for debugging
Tune-3629-CSRHW-abc2.abc 147 ABC music file with the extracted tune(s)
Tune-3629-CSRHW-abc2.ps 6 PostScript
Tune-3629-CSRHW-abc2.txt 147 Plain-text file with the extracted tune(s)
Tune-3629-get.log 4060 Log file, useful mostly for debugging
Tune-36290-get.log 1308 Log file, useful mostly for debugging
Tune-36292-get.log 4247 Log file, useful mostly for debugging
Tune-36294-get.log 22053 Log file, useful mostly for debugging
Tune-36296-get.log 3536 Log file, useful mostly for debugging
Tune-36298-get.log 8633 Log file, useful mostly for debugging
Tune-36299-get.log 16599 Log file, useful mostly for debugging
These files should be available for 24 hours.