Mismatch: X:52 doesn't match requested X:51
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24060-lgsdmweb.ps) >>/Users/jc/w/tmp/Tune-24060-get.log 2>&1" returned status 256
http://www.lesession.co.uk/music/lgsdmweb.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-24060-get.log 29208 Log file, useful mostly for debugging
Tune-24060-lgsdmweb.abc 402 ABC music file with the extracted tune(s)
Tune-24060-lgsdmweb.ps 34352 PostScript
Tune-24060-lgsdmweb.txt 402 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.