pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4123-Heights_of_Cassino-A-64-6.ps) >>/Users/jc/w/tmp/Tune-4123-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/jig/Heights_of_Cassino-A-64-6.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_41232.log 67964 Log file, useful mostly for debugging
Coll_41235.log 270949 Log file, useful mostly for debugging
Coll_41239.log 596209 Log file, useful mostly for debugging
Form_41235.log 758 Log file, useful mostly for debugging
Form_41236.log 703 Log file, useful mostly for debugging
Tune-4123-Heights_of_Cassino-A-64-6.abc 783 ABC music file with the extracted tune(s)
Tune-4123-Heights_of_Cassino-A-64-6.ps 42179 PostScript
Tune-4123-Heights_of_Cassino-A-64-6.txt 783 Plain-text file with the extracted tune(s)
Tune-4123-get.log 4561 Log file, useful mostly for debugging
Tune-41232-get.log 3313 Log file, useful mostly for debugging
Tune-41234-get.log 3216 Log file, useful mostly for debugging
These files should be available for 24 hours.