pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4745-MITTALL.ps) >>/Users/jc/w/tmp/Tune-4745-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Mittell/MITTALL(4-12-2016).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
Form_47450.log 784 Log file, useful mostly for debugging
Form_47454.log 743 Log file, useful mostly for debugging
Form_47458.log 731 Log file, useful mostly for debugging
Tune-4745-MITTALL.abc 704 ABC music file with the extracted tune(s)
Tune-4745-MITTALL.ps 34414 PostScript
Tune-4745-MITTALL.txt 704 Plain-text file with the extracted tune(s)
Tune-4745-get.log 37800 Log file, useful mostly for debugging
Tune-47450-get.log 3180 Log file, useful mostly for debugging
Tune-47451-get.log 4214 Log file, useful mostly for debugging
Tune-47452-get.log 9304 Log file, useful mostly for debugging
Tune-47453-get.log 5133 Log file, useful mostly for debugging
Tune-47458-get.log 2997 Log file, useful mostly for debugging
These files should be available for 24 hours.