pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4403-3262_Guzzle_Together.ps) >>/Users/jc/w/tmp/Tune-4403-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3262_Guzzle_Together.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_44030.log 288944 Log file, useful mostly for debugging
Coll_44036.log 1232705 Log file, useful mostly for debugging
Coll_44039.log 1426596 Log file, useful mostly for debugging
Form_44031.log 899 Log file, useful mostly for debugging
Form_44032.log 878 Log file, useful mostly for debugging
Tune-4403-3262_Guzzle_Together.abc 577 ABC music file with the extracted tune(s)
Tune-4403-3262_Guzzle_Together.ps 35395 PostScript
Tune-4403-3262_Guzzle_Together.txt 577 Plain-text file with the extracted tune(s)
Tune-4403-get.log 4630 Log file, useful mostly for debugging
Tune-44037-get.log 4024 Log file, useful mostly for debugging
Tune-44038-get.log 6042 Log file, useful mostly for debugging
Tune-44039-get.log 3384 Log file, useful mostly for debugging
These files should be available for 24 hours.