Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CentColl/LondonMagazine.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1136-LondonMagazine.ps) >>/Users/jc/w/tmp/Tune-1136-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CentColl/LondonMagazine.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_11363.log 308644 Log file, useful mostly for debugging
Tune-1136-LondonMagazine.abc 155 ABC music file with the extracted tune(s)
Tune-1136-LondonMagazine.ps 6 PostScript
Tune-1136-LondonMagazine.txt 155 Plain-text file with the extracted tune(s)
Tune-1136-get.log 4172 Log file, useful mostly for debugging
Tune-11361-get.log 4104 Log file, useful mostly for debugging
Tune-11362-get.log 3982 Log file, useful mostly for debugging
Tune-11363-get.log 3654 Log file, useful mostly for debugging
Tune-11364-get.log 5688 Log file, useful mostly for debugging
Tune-11367-get.log 4855 Log file, useful mostly for debugging
Tune-11368-get.log 5422 Log file, useful mostly for debugging
Tune-11369-get.log 9002 Log file, useful mostly for debugging
These files should be available for 24 hours.