Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/SocialDances2002/CaledonianMusicalRepository.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4070-CaledonianMusicalRepository.ps) >>/Users/jc/w/tmp/Tune-4070-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SocialDances2002/CaledonianMusicalRepository.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_40701.log 1962509 Log file, useful mostly for debugging
Coll_40704.log 475696 Log file, useful mostly for debugging
Coll_40705.log 273487 Log file, useful mostly for debugging
Coll_40706.log 1723679 Log file, useful mostly for debugging
Coll_40708.log 787903 Log file, useful mostly for debugging
Coll_40709.log 1471980 Log file, useful mostly for debugging
Tune-4070-CaledonianMusicalRepository.abc 176 ABC music file with the extracted tune(s)
Tune-4070-CaledonianMusicalRepository.ps 6 PostScript
Tune-4070-CaledonianMusicalRepository.txt 176 Plain-text file with the extracted tune(s)
Tune-4070-get.log 9564 Log file, useful mostly for debugging
Tune-40701-get.log 4406 Log file, useful mostly for debugging
Tune-40703-get.log 4382 Log file, useful mostly for debugging
Tune-40704-get.log 7471 Log file, useful mostly for debugging
Tune-40705-get.log 8682 Log file, useful mostly for debugging
Tune-40706-get.log 8674 Log file, useful mostly for debugging
Tune-40707-get.log 9787 Log file, useful mostly for debugging
Tune-40708-get.log 12802 Log file, useful mostly for debugging
Tune-40709-get.log 4425 Log file, useful mostly for debugging
These files should be available for 24 hours.