pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-71243-Mrs_Helen_L_Mac_Donald_of_Dunach_1.ps) >>/Users/jc/w/tmp/Tune-71243-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/mr/Mrs_Helen_L_Mac_Donald_of_Dunach_1.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
Form_71243.log 728 Log file, useful mostly for debugging
Tune-71243-Mrs_Helen_L_Mac_Donald_of_Dunach_1.abc 568 ABC music file with the extracted tune(s)
Tune-71243-Mrs_Helen_L_Mac_Donald_of_Dunach_1.ps 46147 PostScript
Tune-71243-Mrs_Helen_L_Mac_Donald_of_Dunach_1.txt 568 Plain-text file with the extracted tune(s)
Tune-71243-get.log 5126 Log file, useful mostly for debugging
These files should be available for 24 hours.