pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4046-Kerr_MM2-V2.ps) >>/Users/jc/w/tmp/Tune-4046-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/Kerr_MM2-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_40466.log 263999 Log file, useful mostly for debugging
Coll_40469.log 46 Log file, useful mostly for debugging
Tune-4046-Kerr_MM2-V2.abc 346 ABC music file with the extracted tune(s)
Tune-4046-Kerr_MM2-V2.ps 34685 PostScript
Tune-4046-Kerr_MM2-V2.txt 346 Plain-text file with the extracted tune(s)
Tune-4046-get.log 4197 Log file, useful mostly for debugging
Tune-40460-get.log 3904 Log file, useful mostly for debugging
Tune-40463-get.log 3655 Log file, useful mostly for debugging
Tune-40465-get.log 6603 Log file, useful mostly for debugging
Tune-40467-get.log 6425 Log file, useful mostly for debugging
Tune-40468-get.log 4476 Log file, useful mostly for debugging
Tune-40469-get.log 3530 Log file, useful mostly for debugging
These files should be available for 24 hours.