pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3959-10_King_Street_Assemble.ps) >>/Users/jc/w/tmp/Tune-3959-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1803/Bland_Weller/10_King_Street_Assemble.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_39590.log 288545 Log file, useful mostly for debugging
Coll_39593.log 281520 Log file, useful mostly for debugging
Coll_39594.log 277305 Log file, useful mostly for debugging
Coll_39598.log 572875 Log file, useful mostly for debugging
Tune-3959-10_King_Street_Assemble.abc 427 ABC music file with the extracted tune(s)
Tune-3959-10_King_Street_Assemble.ps 31033 PostScript
Tune-3959-10_King_Street_Assemble.txt 427 Plain-text file with the extracted tune(s)
Tune-3959-get.log 4831 Log file, useful mostly for debugging
These files should be available for 24 hours.