pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68374-1940AiSiacedF.ps) >>/Users/jc/w/tmp/Tune-68374-get.log 2>&1" returned status 256
http://docgrooms.com/1940AiSiacedF.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-68374-1940AiSiacedF.abc 286 ABC music file with the extracted tune(s)
Tune-68374-1940AiSiacedF.ps 34284 PostScript
Tune-68374-1940AiSiacedF.txt 286 Plain-text file with the extracted tune(s)
Tune-68374-get.log 4201 Log file, useful mostly for debugging
These files should be available for 24 hours.