pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8033-DumfriesLasses1_D_2-JC.ps) >>/Users/jc/w/tmp/Tune-8033-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book26/DumfriesLasses1_D_2-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_80333.log 137967 Log file, useful mostly for debugging
Coll_80337.log 259149 Log file, useful mostly for debugging
Find_80335.log 1497 Log file, useful mostly for debugging
Form_80335.log 836 Log file, useful mostly for debugging
Tune-8033-DumfriesLasses1_D_2-JC.abc 0 ABC music file with the extracted tune(s)
Tune-8033-DumfriesLasses1_D_2-JC.ps 0 PostScript
Tune-8033-DumfriesLasses1_D_2-JC.txt 0 Plain-text file with the extracted tune(s)
Tune-8033-get.log 4091 Log file, useful mostly for debugging
Tune-80335-get.log 3055 Log file, useful mostly for debugging
Tune-80338-get.log 1547 Log file, useful mostly for debugging
Tune-80339-get.log 4081 Log file, useful mostly for debugging
These files should be available for 24 hours.