pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-64615-Ho_Ro_My_Nut_Brown_Maiden-D-16-2.ps) >>/Users/jc/w/tmp/Tune-64615-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/march0/Ho_Ro_My_Nut_Brown_Maiden-D-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
Tune-64615-Ho_Ro_My_Nut_Brown_Maiden-D-16-2.abc 433 ABC music file with the extracted tune(s)
Tune-64615-Ho_Ro_My_Nut_Brown_Maiden-D-16-2.ps 33882 PostScript
Tune-64615-Ho_Ro_My_Nut_Brown_Maiden-D-16-2.txt 433 Plain-text file with the extracted tune(s)
Tune-64615-get.log 4706 Log file, useful mostly for debugging
These files should be available for 24 hours.