pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2549-l.ps) >>/Users/jc/w/tmp/Tune-2549-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/terra.es/personal8/niltoni/l.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_25497.log 139782 Log file, useful mostly for debugging
Find_2549.log 1512 Log file, useful mostly for debugging
Form_25492.log 862 Log file, useful mostly for debugging
Form_25498.log 831 Log file, useful mostly for debugging
Tune-2549-get.log 5952 Log file, useful mostly for debugging
Tune-2549-l.abc 517 ABC music file with the extracted tune(s)
Tune-2549-l.ps 36577 PostScript
Tune-2549-l.txt 517 Plain-text file with the extracted tune(s)
Tune-25494-get.log 1423 Log file, useful mostly for debugging
Tune-25499-get.log 3336 Log file, useful mostly for debugging
These files should be available for 24 hours.