Mismatch: X:3099 doesn't match requested X:558
X:558 not found in http://john-chambers.us/~jc/music/abc/demo/Tunes/WhenTheSaintsGoMarchingIn.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90931-WhenTheSaintsGoMarchingIn.ps) >>/Users/jc/w/tmp/Tune-90931-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/demo/Tunes/WhenTheSaintsGoMarchingIn.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
Coll_90931.log 144093 Log file, useful mostly for debugging
Tune-90931-WhenTheSaintsGoMarchingIn.abc 0 ABC music file with the extracted tune(s)
Tune-90931-WhenTheSaintsGoMarchingIn.ps 6 PostScript
Tune-90931-WhenTheSaintsGoMarchingIn.txt 0 Plain-text file with the extracted tune(s)
Tune-90931-get.log 4869 Log file, useful mostly for debugging
These files should be available for 24 hours.