pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9821-alltunes.ps) >>/Users/jc/w/tmp/Tune-9821-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnWalsh/alltunes.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_98211.log 137967 Log file, useful mostly for debugging
Find_98210.log 1782 Log file, useful mostly for debugging
Form_98216.log 855 Log file, useful mostly for debugging
Tune-9821-alltunes.abc 1300 ABC music file with the extracted tune(s)
Tune-9821-alltunes.ps 39805 PostScript
Tune-9821-alltunes.txt 1300 Plain-text file with the extracted tune(s)
Tune-9821-get.log 4227 Log file, useful mostly for debugging
Tune-98214-get.log 6569 Log file, useful mostly for debugging
Tune-98218-get.log 2873298 Log file, useful mostly for debugging
Tune-98219-get.log 3827 Log file, useful mostly for debugging
These files should be available for 24 hours.