Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/HUTB1/SCD_Book49-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8769-SCD_Book49-V2.ps) >>/Users/jc/w/tmp/Tune-8769-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HUTB1/SCD_Book49-V2.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_87692.log 312432 Log file, useful mostly for debugging
Coll_87693.log 653991 Log file, useful mostly for debugging
Coll_87699.log 274495 Log file, useful mostly for debugging
Tune-8769-SCD_Book49-V2.abc 151 ABC music file with the extracted tune(s)
Tune-8769-SCD_Book49-V2.ps 6 PostScript
Tune-8769-SCD_Book49-V2.txt 151 Plain-text file with the extracted tune(s)
Tune-8769-get.log 4137 Log file, useful mostly for debugging
Tune-87696-get.log 5031 Log file, useful mostly for debugging
Tune-87698-get.log 6714 Log file, useful mostly for debugging
Tune-87699-get.log 5607 Log file, useful mostly for debugging
These files should be available for 24 hours.