Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/AdvancedSD/RobertBremner_CSRCD2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8241-RobertBremner_CSRCD2.ps) >>/Users/jc/w/tmp/Tune-8241-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/AdvancedSD/RobertBremner_CSRCD2.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_82419.log 139580 Log file, useful mostly for debugging
Tune-8241-RobertBremner_CSRCD2.abc 163 ABC music file with the extracted tune(s)
Tune-8241-RobertBremner_CSRCD2.ps 6 PostScript
Tune-8241-RobertBremner_CSRCD2.txt 163 Plain-text file with the extracted tune(s)
Tune-8241-get.log 4312 Log file, useful mostly for debugging
Tune-82413-get.log 4177 Log file, useful mostly for debugging
Tune-82417-get.log 6645 Log file, useful mostly for debugging
Tune-82418-get.log 5373 Log file, useful mostly for debugging
These files should be available for 24 hours.