pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-97179-081_Mrs_Poer.ps) >>/Users/jc/w/tmp/Tune-97179-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HibernianMuse/081_Mrs_Poer.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_97179.log 940 Log file, useful mostly for debugging
Tune-97179-081_Mrs_Poer.abc 1346 ABC music file with the extracted tune(s)
Tune-97179-081_Mrs_Poer.ps 43675 PostScript
Tune-97179-081_Mrs_Poer.txt 1346 Plain-text file with the extracted tune(s)
Tune-97179-get.log 5011 Log file, useful mostly for debugging
These files should be available for 24 hours.