pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1011-2032_McLauchlanes_Scotish_Measure.ps) >>/Users/jc/w/tmp/Tune-1011-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2032_McLauchlanes_Scotish_Measure.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_10113.log 1301550 Log file, useful mostly for debugging
Coll_10115.log 1465936 Log file, useful mostly for debugging
Coll_10117.log 1116090 Log file, useful mostly for debugging
Tune-1011-2032_McLauchlanes_Scotish_Measure.abc 914 ABC music file with the extracted tune(s)
Tune-1011-2032_McLauchlanes_Scotish_Measure.ps 39370 PostScript
Tune-1011-2032_McLauchlanes_Scotish_Measure.txt 914 Plain-text file with the extracted tune(s)
Tune-1011-get.log 4955 Log file, useful mostly for debugging
Tune-10113-get.log 5458 Log file, useful mostly for debugging
These files should be available for 24 hours.