pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9907-celt1.ps) >>/Users/jc/w/tmp/Tune-9907-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/redhawk.org/oneil/celt1.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_99070.log 137967 Log file, useful mostly for debugging
Coll_99079.log 1039426 Log file, useful mostly for debugging
Find_99076.log 1475 Log file, useful mostly for debugging
Tune-9907-celt1.abc 251 ABC music file with the extracted tune(s)
Tune-9907-celt1.ps 35288 PostScript
Tune-9907-celt1.txt 251 Plain-text file with the extracted tune(s)
Tune-9907-get.log 4313 Log file, useful mostly for debugging
Tune-99071-get.log 3407 Log file, useful mostly for debugging
Tune-99077-get.log 8928 Log file, useful mostly for debugging
Tune-99078-get.log 37126 Log file, useful mostly for debugging
Tune-99079-get.log 4723 Log file, useful mostly for debugging
These files should be available for 24 hours.