pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1087-4381_Cheap_Meal.ps) >>/Users/jc/w/tmp/Tune-1087-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/4381_Cheap_Meal.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_10873.log 1293120 Log file, useful mostly for debugging
Coll_10874.log 1103445 Log file, useful mostly for debugging
Coll_10876.log 1182125 Log file, useful mostly for debugging
Coll_10878.log 134418 Log file, useful mostly for debugging
Tune-1087-4381_Cheap_Meal.abc 875 ABC music file with the extracted tune(s)
Tune-1087-4381_Cheap_Meal.ps 40614 PostScript
Tune-1087-4381_Cheap_Meal.txt 875 Plain-text file with the extracted tune(s)
Tune-1087-get.log 4996 Log file, useful mostly for debugging
Tune-10872-get.log 5328 Log file, useful mostly for debugging
Tune-10878-get.log 5997 Log file, useful mostly for debugging
These files should be available for 24 hours.