pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68570-CircassianCircle1.ps) >>/Users/jc/w/tmp/Tune-68570-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/CircassianCircle1.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_68570.log 63914 Log file, useful mostly for debugging
Tune-68570-CircassianCircle1.abc 2098 ABC music file with the extracted tune(s)
Tune-68570-CircassianCircle1.ps 46999 PostScript
Tune-68570-CircassianCircle1.txt 2098 Plain-text file with the extracted tune(s)
Tune-68570-get.log 5312 Log file, useful mostly for debugging
These files should be available for 24 hours.