pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7856-BonnieCharlie_4_Dm-JC.ps) >>/Users/jc/w/tmp/Tune-7856-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book16/BonnieCharlie_4_Dm-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
Find_78569.log 1475 Log file, useful mostly for debugging
Form_78562.log 823 Log file, useful mostly for debugging
Tune-7856-BonnieCharlie_4_Dm-JC.abc 584 ABC music file with the extracted tune(s)
Tune-7856-BonnieCharlie_4_Dm-JC.ps 36803 PostScript
Tune-7856-BonnieCharlie_4_Dm-JC.txt 584 Plain-text file with the extracted tune(s)
Tune-7856-get.log 4499 Log file, useful mostly for debugging
Tune-78560-get.log 258977 Log file, useful mostly for debugging
Tune-78564-get.log 3069 Log file, useful mostly for debugging
Tune-78568-BobbyHarveyS.abc 633 ABC music file with the extracted tune(s)
Tune-78568-BobbyHarveyS.txt 633 Plain-text file with the extracted tune(s)
Tune-78568-get.log 3137 Log file, useful mostly for debugging
These files should be available for 24 hours.