pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76824-4261_Highland_Whisky.ps) >>/Users/jc/w/tmp/Tune-76824-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/4261_Highland_Whisky.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_76824.log 3477531 Log file, useful mostly for debugging
Tune-76824-4261_Highland_Whisky.abc 855 ABC music file with the extracted tune(s)
Tune-76824-4261_Highland_Whisky.ps 38428 PostScript
Tune-76824-4261_Highland_Whisky.txt 855 Plain-text file with the extracted tune(s)
Tune-76824-get.log 4670 Log file, useful mostly for debugging
These files should be available for 24 hours.