pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2374-intl.ps) >>/Users/jc/w/tmp/Tune-2374-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/SeymourShlien/runabc/intl/%36:PETRONELLA.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_23749.log 401146 Log file, useful mostly for debugging
Form_23742.log 749 Log file, useful mostly for debugging
Tune-2374-get.log 0 Log file, useful mostly for debugging
Tune-2374-intl.abc 0 ABC music file with the extracted tune(s)
Tune-2374-intl.ps 0 PostScript
Tune-2374-intl.txt 0 Plain-text file with the extracted tune(s)
Tune-23743-get.log 1434 Log file, useful mostly for debugging
These files should be available for 24 hours.