pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4443-Dusty_Bobs_Jig-G-32-3.ps) >>/Users/jc/w/tmp/Tune-4443-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/jig/Dusty_Bobs_Jig-G-32-3.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
Coll_44435.log 287349 Log file, useful mostly for debugging
Coll_44438.log 261969 Log file, useful mostly for debugging
Coll_44439.log 294869 Log file, useful mostly for debugging
Form_44432.log 855 Log file, useful mostly for debugging
Form_44434.log 1709 Log file, useful mostly for debugging
Tune-4443-Dusty_Bobs_Jig-G-32-3.abc 583 ABC music file with the extracted tune(s)
Tune-4443-Dusty_Bobs_Jig-G-32-3.ps 36132 PostScript
Tune-4443-Dusty_Bobs_Jig-G-32-3.txt 583 Plain-text file with the extracted tune(s)
Tune-4443-get.log 5072 Log file, useful mostly for debugging
Tune-44432-get.log 2346 Log file, useful mostly for debugging
Tune-44434-get.log 91672 Log file, useful mostly for debugging
Tune-44435-get.log 4085 Log file, useful mostly for debugging
Tune-44438-get.log 0 Log file, useful mostly for debugging
These files should be available for 24 hours.