pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-95052-Briggs.ps) >>/Users/jc/w/tmp/Tune-95052-get.log 2>&1" returned status 256
http://tunearch.org/wiki/Briggs'_Breakdown

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-95052-Briggs.abc 0 ABC music file with the extracted tune(s)
Tune-95052-Briggs.ps 0 PostScript
Tune-95052-Briggs.txt 0 Plain-text file with the extracted tune(s)
Tune-95052-get.log 8179 Log file, useful mostly for debugging
These files should be available for 24 hours.