pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-13894-letitsnow.ps) >>/Users/jc/w/tmp/Tune-13894-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/gulfweb.net:34043/~rlwalker/abc/letitsnow.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-13894-get.log 4370 Log file, useful mostly for debugging
Tune-13894-letitsnow.abc 1330 ABC music file with the extracted tune(s)
Tune-13894-letitsnow.ps 43823 PostScript
Tune-13894-letitsnow.txt 1330 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.