pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-37992-Aird-v6.ps) >>/Users/jc/w/tmp/Tune-37992-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Aird/Aird-v6.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_37992.log 281709 Log file, useful mostly for debugging
Tune-37992-Aird-v6.abc 258 ABC music file with the extracted tune(s)
Tune-37992-Aird-v6.ps 34449 PostScript
Tune-37992-Aird-v6.txt 258 Plain-text file with the extracted tune(s)
Tune-37992-get.log 4186 Log file, useful mostly for debugging
These files should be available for 24 hours.