pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-64966-jigs.ps) >>/Users/jc/w/tmp/Tune-64966-get.log 2>&1" returned status 256
http://montrealsession.cechire.com/assets/abc/jigs.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-64966-get.log 4216 Log file, useful mostly for debugging
Tune-64966-jigs.abc 238 ABC music file with the extracted tune(s)
Tune-64966-jigs.ps 35204 PostScript
Tune-64966-jigs.txt 238 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.