X:4 not found in http://www.markkenneth.com/ABCmusic/Trinity Hall Sessions.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1418-Trinity.ps) >>/Users/jc/w/tmp/Tune-1418-get.log 2>&1" returned status 256
http://www.markkenneth.com/ABCmusic/Trinity Hall Sessions.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_14181.log 135547 Log file, useful mostly for debugging
Coll_14188.log 139358 Log file, useful mostly for debugging
Find_14186.log 1395 Log file, useful mostly for debugging
Tune-1418-Trinity.abc 0 ABC music file with the extracted tune(s)
Tune-1418-Trinity.ps 6 PostScript
Tune-1418-Trinity.txt 0 Plain-text file with the extracted tune(s)
Tune-1418-get.log 4190 Log file, useful mostly for debugging
Tune-14181-get.log 7028 Log file, useful mostly for debugging
Tune-14184-get.log 6433 Log file, useful mostly for debugging
These files should be available for 24 hours.