Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1785/tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3642-tune.ps) >>/Users/jc/w/tmp/Tune-3642-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1785/tune.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_36429.log 1494 Log file, useful mostly for debugging
Tune-3642-get.log 3940 Log file, useful mostly for debugging
Tune-3642-tune.abc 141 ABC music file with the extracted tune(s)
Tune-3642-tune.ps 6 PostScript
Tune-3642-tune.txt 141 Plain-text file with the extracted tune(s)
Tune-36420-WalterRainstorp_WRCB.abc 156 ABC music file with the extracted tune(s)
Tune-36420-WalterRainstorp_WRCB.ps 6 PostScript
Tune-36420-WalterRainstorp_WRCB.txt 156 Plain-text file with the extracted tune(s)
Tune-36420-get.log 4197 Log file, useful mostly for debugging
Tune-36424-get.log 1433 Log file, useful mostly for debugging
Tune-36427-get.log 3865 Log file, useful mostly for debugging
Tune-36429-CSRHW-abc2.abc 147 ABC music file with the extracted tune(s)
Tune-36429-CSRHW-abc2.pdf 2217 Portable Data Format
Tune-36429-CSRHW-abc2.ps 6 PostScript
Tune-36429-CSRHW-abc2.txt 147 Plain-text file with the extracted tune(s)
Tune-36429-get.log 4884 Log file, useful mostly for debugging
These files should be available for 24 hours.