pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72808-2241_Niel_Gows_Strathspey.ps) >>/Users/jc/w/tmp/Tune-72808-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2241_Niel_Gows_Strathspey.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_72808.log 249206 Log file, useful mostly for debugging
Tune-72808-2241_Niel_Gows_Strathspey.abc 705 ABC music file with the extracted tune(s)
Tune-72808-2241_Niel_Gows_Strathspey.ps 36094 PostScript
Tune-72808-2241_Niel_Gows_Strathspey.txt 705 Plain-text file with the extracted tune(s)
Tune-72808-get.log 4757 Log file, useful mostly for debugging
These files should be available for 24 hours.