pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90114-Queens_Welcome.ps) >>/Users/jc/w/tmp/Tune-90114-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/Queens_Welcome.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_90114.log 275119 Log file, useful mostly for debugging
Tune-90114-Queens_Welcome.abc 751 ABC music file with the extracted tune(s)
Tune-90114-Queens_Welcome.ps 34636 PostScript
Tune-90114-Queens_Welcome.txt 751 Plain-text file with the extracted tune(s)
Tune-90114-get.log 4459 Log file, useful mostly for debugging
These files should be available for 24 hours.