pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2956-schott.ps) >>/Users/jc/w/tmp/Tune-2956-get.log 2>&1" returned status 256
http://www.gulfweb.net/rlwalker/abc/schott.abc.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_29561.log 1850662 Log file, useful mostly for debugging
Form_29560.log 845 Log file, useful mostly for debugging
Tune-2956-get.log 4390 Log file, useful mostly for debugging
Tune-2956-schott.abc 546 ABC music file with the extracted tune(s)
Tune-2956-schott.ps 40861 PostScript
Tune-2956-schott.txt 546 Plain-text file with the extracted tune(s)
Tune-29569-get.log 4677 Log file, useful mostly for debugging
These files should be available for 24 hours.