pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7539-Cameron_Highlanders_SS-A-64-8.ps) >>/Users/jc/w/tmp/Tune-7539-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/march/Cameron_Highlanders_SS-A-64-8.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_75392.log 760 Log file, useful mostly for debugging
Form_75394.log 741 Log file, useful mostly for debugging
Tune-7539-Cameron_Highlanders_SS-A-64-8.abc 1416 ABC music file with the extracted tune(s)
Tune-7539-Cameron_Highlanders_SS-A-64-8.ps 45764 PostScript
Tune-7539-Cameron_Highlanders_SS-A-64-8.txt 1416 Plain-text file with the extracted tune(s)
Tune-7539-get.log 5951 Log file, useful mostly for debugging
Tune-75390-get.log 342277 Log file, useful mostly for debugging
Tune-75392-get.log 10366 Log file, useful mostly for debugging
Tune-75394-get.log 2996 Log file, useful mostly for debugging
Tune-75396-get.log 3549 Log file, useful mostly for debugging
Tune-75398-get.log 5291 Log file, useful mostly for debugging
These files should be available for 24 hours.