pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57775-10451_Rule_Britania.ps) >>/Users/jc/w/tmp/Tune-57775-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ERM/10451_Rule_Britania.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-57775-10451_Rule_Britania.abc 637 ABC music file with the extracted tune(s)
Tune-57775-10451_Rule_Britania.ps 35450 PostScript
Tune-57775-10451_Rule_Britania.txt 637 Plain-text file with the extracted tune(s)
Tune-57775-get.log 4569 Log file, useful mostly for debugging
These files should be available for 24 hours.