pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-65566-wf_update2.ps) >>/Users/jc/w/tmp/Tune-65566-get.log 2>&1" returned status 256
http://www.lesession.co.uk/music/wf_update2.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-65566-get.log 7621 Log file, useful mostly for debugging
Tune-65566-wf_update2.abc 710 ABC music file with the extracted tune(s)
Tune-65566-wf_update2.ps 41489 PostScript
Tune-65566-wf_update2.txt 710 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.