pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-89847-CALVERT.ps) >>/Users/jc/w/tmp/Tune-89847-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Calvert/CALVERT(12-4-16).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
Tune-89847-CALVERT.abc 433 ABC music file with the extracted tune(s)
Tune-89847-CALVERT.ps 35774 PostScript
Tune-89847-CALVERT.txt 433 Plain-text file with the extracted tune(s)
Tune-89847-get.log 19264 Log file, useful mostly for debugging
These files should be available for 24 hours.