pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-69964-MARA_MARO.ps) >>/Users/jc/w/tmp/Tune-69964-get.log 2>&1" returned status 256
http://www.ibiblio.org/fiddlers/MARA_MARO.htm

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-69964-MARA_MARO.abc 843 ABC music file with the extracted tune(s)
Tune-69964-MARA_MARO.ps 41499 PostScript
Tune-69964-MARA_MARO.txt 843 Plain-text file with the extracted tune(s)
Tune-69964-get.log 5819 Log file, useful mostly for debugging
These files should be available for 24 hours.