pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-11230-MILLER.ps) >>/Users/jc/w/tmp/Tune-11230-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Miller/MILLER(12-4-2016).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_11230.log 915 Log file, useful mostly for debugging
Tune-11230-MILLER.abc 491 ABC music file with the extracted tune(s)
Tune-11230-MILLER.ps 32031 PostScript
Tune-11230-MILLER.txt 491 Plain-text file with the extracted tune(s)
Tune-11230-get.log 35417 Log file, useful mostly for debugging
These files should be available for 24 hours.