pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9576-Petronella.ps) >>/Users/jc/w/tmp/Tune-9576-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/contrib/Tunes/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_95761.log 273729 Log file, useful mostly for debugging
Tune-9576-Petronella.abc 313 ABC music file with the extracted tune(s)
Tune-9576-Petronella.ps 35115 PostScript
Tune-9576-Petronella.txt 313 Plain-text file with the extracted tune(s)
Tune-9576-get.log 9385 Log file, useful mostly for debugging
Tune-95763-get.log 1653 Log file, useful mostly for debugging
Tune-95765-James_Scott_Skinner-001.svg 26488 Scalable Vector Graphics format
Tune-95765-James_Scott_Skinner.abc 493 ABC music file with the extracted tune(s)
Tune-95765-James_Scott_Skinner.txt 493 Plain-text file with the extracted tune(s)
Tune-95765-get.log 3938 Log file, useful mostly for debugging
Tune-95768-get.log 3293 Log file, useful mostly for debugging
These files should be available for 24 hours.