pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-10663-MrsSellersFav_G-AL.ps) >>/Users/jc/w/tmp/Tune-10663-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book18/MrsSellersFav_G-AL.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-10663-MrsSellersFav_G-AL.abc 589 ABC music file with the extracted tune(s)
Tune-10663-MrsSellersFav_G-AL.ps 35704 PostScript
Tune-10663-MrsSellersFav_G-AL.txt 589 Plain-text file with the extracted tune(s)
Tune-10663-get.log 5045 Log file, useful mostly for debugging
These files should be available for 24 hours.