Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/session/Oivan_Ilo/AGSt07.abc/strath"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6960-strath.ps) >>/Users/jc/w/tmp/Tune-6960-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/Oivan_Ilo/AGSt07.abc/strath

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-6960-get.log 4028 Log file, useful mostly for debugging
Tune-6960-strath.abc 158 ABC music file with the extracted tune(s)
Tune-6960-strath.ps 6 PostScript
Tune-6960-strath.txt 158 Plain-text file with the extracted tune(s)
Tune-69603-1799_Preston.abc 20772 ABC music file with the extracted tune(s)
Tune-69603-1799_Preston.ps 124295 PostScript
Tune-69603-1799_Preston.txt 20772 Plain-text file with the extracted tune(s)
Tune-69603-get.log 17385 Log file, useful mostly for debugging
Tune-69607-1791.abc 150 ABC music file with the extracted tune(s)
Tune-69607-1791.ps 6 PostScript
Tune-69607-1791.txt 150 Plain-text file with the extracted tune(s)
Tune-69607-get.log 3877 Log file, useful mostly for debugging
These files should be available for 24 hours.