pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-15847-1809_Cahusac_AK.ps) >>/Users/jc/w/tmp/Tune-15847-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1809_Cahusac_AK.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_15847.log 464010 Log file, useful mostly for debugging
Tune-15847-1809_Cahusac_AK.abc 13142 ABC music file with the extracted tune(s)
Tune-15847-1809_Cahusac_AK.ps 123578 PostScript
Tune-15847-1809_Cahusac_AK.txt 13142 Plain-text file with the extracted tune(s)
Tune-15847-get.log 17917 Log file, useful mostly for debugging
These files should be available for 24 hours.