pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-46679-On_the_Trail_of_the_Lonesome_Pine.ps) >>/Users/jc/w/tmp/Tune-46679-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/Colin_Hume/On_the_Trail_of_the_Lonesome_Pine.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
Tune-46679-On_the_Trail_of_the_Lonesome_Pine.abc 674 ABC music file with the extracted tune(s)
Tune-46679-On_the_Trail_of_the_Lonesome_Pine.ps 35954 PostScript
Tune-46679-On_the_Trail_of_the_Lonesome_Pine.txt 674 Plain-text file with the extracted tune(s)
Tune-46679-get.log 5549 Log file, useful mostly for debugging
These files should be available for 24 hours.