pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38520-Geckoes_totmos.ps) >>/Users/jc/w/tmp/Tune-38520-get.log 2>&1" returned status 256
http://www.hulot.demon.co.uk/Geckoes_totmos.htm

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

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-38520-Geckoes_totmos.abc 191 ABC music file with the extracted tune(s)
Tune-38520-Geckoes_totmos.ps 34555 PostScript
Tune-38520-Geckoes_totmos.txt 191 Plain-text file with the extracted tune(s)
Tune-38520-get.log 4226 Log file, useful mostly for debugging
These files should be available for 24 hours.