pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16139-2262_Lick_the_Ladle_Sandy.ps) >>/Users/jc/w/tmp/Tune-16139-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2262_Lick_the_Ladle_Sandy.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_16139.log 2430285 Log file, useful mostly for debugging
Form_16139.log 892 Log file, useful mostly for debugging
Tune-16139-2262_Lick_the_Ladle_Sandy.abc 991 ABC music file with the extracted tune(s)
Tune-16139-2262_Lick_the_Ladle_Sandy.ps 37342 PostScript
Tune-16139-2262_Lick_the_Ladle_Sandy.txt 991 Plain-text file with the extracted tune(s)
Tune-16139-get.log 4791 Log file, useful mostly for debugging
These files should be available for 24 hours.