pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7919-Kerr_MM1-V2.ps) >>/Users/jc/w/tmp/Tune-7919-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM1/Kerr_MM1-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_79193.log 57830 Log file, useful mostly for debugging
Find_79191.log 0 Log file, useful mostly for debugging
Tune-7919-Kerr_MM1-V2.abc 541 ABC music file with the extracted tune(s)
Tune-7919-Kerr_MM1-V2.ps 35688 PostScript
Tune-7919-Kerr_MM1-V2.txt 541 Plain-text file with the extracted tune(s)
Tune-7919-get.log 88607 Log file, useful mostly for debugging
Tune-79194-get.log 61881 Log file, useful mostly for debugging
These files should be available for 24 hours.