pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7709-MM4-V2.ps) >>/Users/jc/w/tmp/Tune-7709-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM4-V2.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_77098.log 259149 Log file, useful mostly for debugging
Form_7709.log 879 Log file, useful mostly for debugging
Form_77092.log 824 Log file, useful mostly for debugging
Form_77094.log 855 Log file, useful mostly for debugging
Form_77098.log 1188 Log file, useful mostly for debugging
Form_77099.log 871 Log file, useful mostly for debugging
Tune-7709-MM4-V2.abc 431 ABC music file with the extracted tune(s)
Tune-7709-MM4-V2.ps 34250 PostScript
Tune-7709-MM4-V2.txt 431 Plain-text file with the extracted tune(s)
Tune-7709-get.log 4097 Log file, useful mostly for debugging
Tune-77092-get.log 3013 Log file, useful mostly for debugging
Tune-77099-get.log 3086 Log file, useful mostly for debugging
These files should be available for 24 hours.