Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1784/RobertBremner_CSRCD2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9512-RobertBremner_CSRCD2.ps) >>/Users/jc/w/tmp/Tune-9512-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1784/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_95124.log 433263 Log file, useful mostly for debugging
Coll_95125.log 375655 Log file, useful mostly for debugging
Form_95128.log 928 Log file, useful mostly for debugging
Tune-9512-RobertBremner_CSRCD2.abc 157 ABC music file with the extracted tune(s)
Tune-9512-RobertBremner_CSRCD2.ps 6 PostScript
Tune-9512-RobertBremner_CSRCD2.txt 157 Plain-text file with the extracted tune(s)
Tune-9512-get.log 4276 Log file, useful mostly for debugging
Tune-95123-get.log 4773 Log file, useful mostly for debugging
These files should be available for 24 hours.