pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-63642-090_Irish_Widow.ps) >>/Users/jc/w/tmp/Tune-63642-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HibernianMuse/090_Irish_Widow.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-63642-090_Irish_Widow.abc 783 ABC music file with the extracted tune(s)
Tune-63642-090_Irish_Widow.ps 36568 PostScript
Tune-63642-090_Irish_Widow.txt 783 Plain-text file with the extracted tune(s)
Tune-63642-get.log 4560 Log file, useful mostly for debugging
These files should be available for 24 hours.