pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54296-21292_Cairney_Mount.ps) >>/Users/jc/w/tmp/Tune-54296-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ERM/21292_Cairney_Mount.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-54296-042_MrsGeorgeForshawsStrathspey.abc 883 ABC music file with the extracted tune(s)
Tune-54296-042_MrsGeorgeForshawsStrathspey.pdf 20707 Portable Data Format
Tune-54296-042_MrsGeorgeForshawsStrathspey.ps 38426 PostScript
Tune-54296-042_MrsGeorgeForshawsStrathspey.txt 883 Plain-text file with the extracted tune(s)
Tune-54296-21292_Cairney_Mount.abc 550 ABC music file with the extracted tune(s)
Tune-54296-21292_Cairney_Mount.ps 33956 PostScript
Tune-54296-21292_Cairney_Mount.txt 550 Plain-text file with the extracted tune(s)
Tune-54296-get.log 10618 Log file, useful mostly for debugging
These files should be available for 24 hours.