pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-97200-2101_Coolun.ps) >>/Users/jc/w/tmp/Tune-97200-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2101_Coolun.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_97200.log 1156835 Log file, useful mostly for debugging
Tune-97200-2101_Coolun.abc 961 ABC music file with the extracted tune(s)
Tune-97200-2101_Coolun.ps 39163 PostScript
Tune-97200-2101_Coolun.txt 961 Plain-text file with the extracted tune(s)
Tune-97200-get.log 4380 Log file, useful mostly for debugging
These files should be available for 24 hours.