pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4390-DumfriesLasses1_D_JC.ps) >>/Users/jc/w/tmp/Tune-4390-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book26/DumfriesLasses1_D_JC.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_43903.log 128287 Log file, useful mostly for debugging
Find_43900.log 1786 Log file, useful mostly for debugging
Form_43906.log 880 Log file, useful mostly for debugging
Tune-4390-DumfriesLasses1_D_JC.abc 381 ABC music file with the extracted tune(s)
Tune-4390-DumfriesLasses1_D_JC.ps 33808 PostScript
Tune-4390-DumfriesLasses1_D_JC.txt 381 Plain-text file with the extracted tune(s)
Tune-4390-get.log 4792 Log file, useful mostly for debugging
Tune-43900-get.log 71718 Log file, useful mostly for debugging
These files should be available for 24 hours.