pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-81712-Landrin_Potpourri.ps) >>/Users/jc/w/tmp/Tune-81712-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Landrin/Potpourri/Landrin_Potpourri.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_81712.log 843 Log file, useful mostly for debugging
Tune-81712-Landrin_Potpourri.abc 634 ABC music file with the extracted tune(s)
Tune-81712-Landrin_Potpourri.ps 32389 PostScript
Tune-81712-Landrin_Potpourri.txt 634 Plain-text file with the extracted tune(s)
Tune-81712-get.log 41180 Log file, useful mostly for debugging
These files should be available for 24 hours.