pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5470-CauldKailInAberdeen2.ps) >>/Users/jc/w/tmp/Tune-5470-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/reel/CauldKailInAberdeen2.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_54700.log 256329 Log file, useful mostly for debugging
Find_54709.log 1753 Log file, useful mostly for debugging
Form_5470.log 860 Log file, useful mostly for debugging
Form_54703.log 1680 Log file, useful mostly for debugging
Tune-5470-CauldKailInAberdeen2.abc 851 ABC music file with the extracted tune(s)
Tune-5470-CauldKailInAberdeen2.ps 43630 PostScript
Tune-5470-CauldKailInAberdeen2.txt 851 Plain-text file with the extracted tune(s)
Tune-5470-get.log 4575 Log file, useful mostly for debugging
Tune-54702-get.log 4934 Log file, useful mostly for debugging
Tune-54706-get.log 4035 Log file, useful mostly for debugging
Tune-54709-get.log 9971 Log file, useful mostly for debugging
These files should be available for 24 hours.