Mismatch: X:15021 doesn't match requested X:15024
Mismatch: X:15028 doesn't match requested X:15024
pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-86885-s.abc -F fmt/pdf_60.fmt +s 0.60 +maxs 2000 )>/Users/jc/w/tmp/Tune-86885-s.ps 2>>/Users/jc/w/tmp/Tune-86885-get.log" returned status 256.
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-86885-s.ps) >>/Users/jc/w/tmp/Tune-86885-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/terra.es/personal8/niltoni/s.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-86885-get.log 8180 Log file, useful mostly for debugging
Tune-86885-s.abc 0 ABC music file with the extracted tune(s)
These files should be available for 24 hours.