pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8742-DunkeldVolunteers_D.ps) >>/Users/jc/w/tmp/Tune-8742-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/march/DunkeldVolunteers_D.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_8742.log 261969 Log file, useful mostly for debugging
Coll_87420.log 0 Log file, useful mostly for debugging
Coll_87429.log 142807 Log file, useful mostly for debugging
Find_87427.log 1489 Log file, useful mostly for debugging
Find_87428.log 1441 Log file, useful mostly for debugging
Tune-8742-DunkeldVolunteers_D.abc 387 ABC music file with the extracted tune(s)
Tune-8742-DunkeldVolunteers_D.ps 34178 PostScript
Tune-8742-DunkeldVolunteers_D.txt 387 Plain-text file with the extracted tune(s)
Tune-8742-get.log 6208 Log file, useful mostly for debugging
Tune-87420-get.log 3631 Log file, useful mostly for debugging
Tune-87422-get.log 7131 Log file, useful mostly for debugging
Tune-87429-get.log 2945 Log file, useful mostly for debugging
These files should be available for 24 hours.