X:454 not found in http://lesters-tune-a-day.blogspot.fr/2016/07/
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7817-07.ps) >>/Users/jc/w/tmp/Tune-7817-get.log 2>&1" returned status 256
http://lesters-tune-a-day.blogspot.fr/2016/07/

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_78171.log 1387 Log file, useful mostly for debugging
Tune-7817-07.abc 0 ABC music file with the extracted tune(s)
Tune-7817-07.ps 6 PostScript
Tune-7817-07.txt 0 Plain-text file with the extracted tune(s)
Tune-7817-get.log 4128 Log file, useful mostly for debugging
These files should be available for 24 hours.