Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/GlendarrochSDS/JamesOswald_CPC-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6602-JamesOswald_CPC-abc2.ps) >>/Users/jc/w/tmp/Tune-6602-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/GlendarrochSDS/JamesOswald_CPC-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_66020.log 153216 Log file, useful mostly for debugging
Coll_66021.log 4642097 Log file, useful mostly for debugging
Tune-6602-JamesOswald_CPC-abc2.abc 167 ABC music file with the extracted tune(s)
Tune-6602-JamesOswald_CPC-abc2.ps 6 PostScript
Tune-6602-JamesOswald_CPC-abc2.txt 167 Plain-text file with the extracted tune(s)
Tune-6602-get.log 14064 Log file, useful mostly for debugging
Tune-66020-get.log 3604 Log file, useful mostly for debugging
Tune-66023-get.log 3528 Log file, useful mostly for debugging
Tune-66025-get.log 9336 Log file, useful mostly for debugging
Tune-66026-get.log 4432 Log file, useful mostly for debugging
Tune-66027-get.log 9074 Log file, useful mostly for debugging
Tune-66028-get.log 5725 Log file, useful mostly for debugging
These files should be available for 24 hours.