pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7699-094_Prince_Charlies_Welcome_to_the_Isle_of_Skye.ps) >>/Users/jc/w/tmp/Tune-7699-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Chappell/094_Prince_Charlies_Welcome_to_the_Isle_of_Skye.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_76990.log 279197 Log file, useful mostly for debugging
Tune-7699-094_Prince_Charlies_Welcome_to_the_Isle_of_Skye.abc 610 ABC music file with the extracted tune(s)
Tune-7699-094_Prince_Charlies_Welcome_to_the_Isle_of_Skye.ps 38321 PostScript
Tune-7699-094_Prince_Charlies_Welcome_to_the_Isle_of_Skye.txt 610 Plain-text file with the extracted tune(s)
Tune-7699-get.log 6211 Log file, useful mostly for debugging
These files should be available for 24 hours.