pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-95590-902_Patrick_Sarffield_or_New_Lango_Lee.ps) >>/Users/jc/w/tmp/Tune-95590-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1780/Thompson/902_Patrick_Sarffield_or_New_Lango_Lee.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-95590-902_Patrick_Sarffield_or_New_Lango_Lee.abc 911 ABC music file with the extracted tune(s)
Tune-95590-902_Patrick_Sarffield_or_New_Lango_Lee.ps 34406 PostScript
Tune-95590-902_Patrick_Sarffield_or_New_Lango_Lee.txt 911 Plain-text file with the extracted tune(s)
Tune-95590-get.log 5538 Log file, useful mostly for debugging
These files should be available for 24 hours.