pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42816-Cameron_Highlanders-A-32-3.ps) >>/Users/jc/w/tmp/Tune-42816-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/march/Cameron_Highlanders-A-32-3.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_42816.log 341193 Log file, useful mostly for debugging
Tune-42816-Cameron_Highlanders-A-32-3.abc 574 ABC music file with the extracted tune(s)
Tune-42816-Cameron_Highlanders-A-32-3.ps 35561 PostScript
Tune-42816-Cameron_Highlanders-A-32-3.txt 574 Plain-text file with the extracted tune(s)
Tune-42816-get.log 4606 Log file, useful mostly for debugging
These files should be available for 24 hours.