pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-86949-onmi.ps) >>/Users/jc/w/tmp/Tune-86949-get.log 2>&1" returned status 256
http://www.capeirish.com/webabc/working/source.folders/onmi1850/onmi_misc/onmi.misc_ABC.txt

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-86949-get.log 4802 Log file, useful mostly for debugging
Tune-86949-onmi.abc 1774 ABC music file with the extracted tune(s)
Tune-86949-onmi.ps 61322 PostScript
Tune-86949-onmi.txt 1774 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.