Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/HUTB1/Gow-CSR4-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3558-Gow-CSR4-abc2.ps) >>/Users/jc/w/tmp/Tune-3558-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/HUTB1/Gow-CSR4-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_35588.log 2317406 Log file, useful mostly for debugging
Find_35587.log 1790 Log file, useful mostly for debugging
Tune-3558-Gow-CSR4-abc2.abc 151 ABC music file with the extracted tune(s)
Tune-3558-Gow-CSR4-abc2.ps 6 PostScript
Tune-3558-Gow-CSR4-abc2.txt 151 Plain-text file with the extracted tune(s)
Tune-3558-get.log 9311 Log file, useful mostly for debugging
Tune-35583-get.log 14337 Log file, useful mostly for debugging
Tune-35586-WilliamShepherdsCollections.abc 165 ABC music file with the extracted tune(s)
Tune-35586-WilliamShepherdsCollections.ps 6 PostScript
Tune-35586-WilliamShepherdsCollections.txt 165 Plain-text file with the extracted tune(s)
Tune-35586-get.log 4356 Log file, useful mostly for debugging
Tune-35588-get.log 3256 Log file, useful mostly for debugging
Tune-35589-get.log 7612 Log file, useful mostly for debugging
These files should be available for 24 hours.