pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1694-Mull_Rant.ps) >>/Users/jc/w/tmp/Tune-1694-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Athole/T/Mull_Rant.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_16943.log 0 Log file, useful mostly for debugging
Tune-1694-Mull_Rant.abc 351 ABC music file with the extracted tune(s)
Tune-1694-Mull_Rant.ps 36382 PostScript
Tune-1694-Mull_Rant.txt 351 Plain-text file with the extracted tune(s)
Tune-1694-get.log 9700 Log file, useful mostly for debugging
These files should be available for 24 hours.