pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6557-Craig.ps) >>/Users/jc/w/tmp/Tune-6557-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Craigs/Craig'sEmpireViolinColl(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
Coll_65570.log 267609 Log file, useful mostly for debugging
Form_65573.log 810 Log file, useful mostly for debugging
Tune-6557-Craig.abc 508 ABC music file with the extracted tune(s)
Tune-6557-Craig.ps 37014 PostScript
Tune-6557-Craig.txt 508 Plain-text file with the extracted tune(s)
Tune-6557-get.log 13445 Log file, useful mostly for debugging
Tune-65571-get.log 3023 Log file, useful mostly for debugging
Tune-65574-get.log 4228 Log file, useful mostly for debugging
These files should be available for 24 hours.