pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-37062-Dr_Rosss_50th_Welcome_To_The_Argyllshire_Gathering.ps) >>/Users/jc/w/tmp/Tune-37062-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/thisoldtractor.com/Dr_Rosss_50th_Welcome_To_The_Argyllshire_Gathering.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-37062-Dr_Rosss_50th_Welcome_To_The_Argyllshire_Gathering.abc 1499 ABC music file with the extracted tune(s)
Tune-37062-Dr_Rosss_50th_Welcome_To_The_Argyllshire_Gathering.ps 47852 PostScript
Tune-37062-Dr_Rosss_50th_Welcome_To_The_Argyllshire_Gathering.txt 1499 Plain-text file with the extracted tune(s)
Tune-37062-get.log 6391 Log file, useful mostly for debugging
These files should be available for 24 hours.