pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8663-Tha_Mi_Sgith_march-Am-16-2.ps) >>/Users/jc/w/tmp/Tune-8663-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/march/Tha_Mi_Sgith_march-Am-16-2.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_86630.log 286311 Log file, useful mostly for debugging
Coll_86639.log 2820662 Log file, useful mostly for debugging
Tune-8663-Tha_Mi_Sgith_march-Am-16-2.abc 597 ABC music file with the extracted tune(s)
Tune-8663-Tha_Mi_Sgith_march-Am-16-2.ps 33365 PostScript
Tune-8663-Tha_Mi_Sgith_march-Am-16-2.txt 597 Plain-text file with the extracted tune(s)
Tune-8663-get.log 9371 Log file, useful mostly for debugging
Tune-86631-get.log 4703 Log file, useful mostly for debugging
These files should be available for 24 hours.