Got HTTP status 406 Not Acceptable for "http://www.thisoldtractor.com/guzzi007/Scottish_Tome/F-Pipe_March_Pibroch.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-13475-F-Pipe_March_Pibroch.ps) >>/Users/jc/w/tmp/Tune-13475-get.log 2>&1" returned status 256
http://www.thisoldtractor.com/guzzi007/Scottish_Tome/F-Pipe_March_Pibroch.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-13475-F-Pipe_March_Pibroch.abc 295 ABC music file with the extracted tune(s)
Tune-13475-F-Pipe_March_Pibroch.ps 6 PostScript
Tune-13475-F-Pipe_March_Pibroch.txt 295 Plain-text file with the extracted tune(s)
Tune-13475-get.log 4506 Log file, useful mostly for debugging
These files should be available for 24 hours.