pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66262-makamu3.ps) >>/Users/jc/w/tmp/Tune-66262-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/ifdo.ca/~seymour/runabc/makams/makamu3.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
Tune-66262-get.log 25192 Log file, useful mostly for debugging
Tune-66262-makamu3.abc 2892 ABC music file with the extracted tune(s)
Tune-66262-makamu3.ps 59969 PostScript
Tune-66262-makamu3.txt 2892 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.