pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3438-Aird-v1.ps) >>/Users/jc/w/tmp/Tune-3438-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Aird/Aird-v1.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_34382.log 147647 Log file, useful mostly for debugging
Coll_34383.log 412636 Log file, useful mostly for debugging
Find_34389.log 1381 Log file, useful mostly for debugging
Form_34381.log 855 Log file, useful mostly for debugging
Form_34383.log 810 Log file, useful mostly for debugging
Tune-3438-Aird-v1.abc 294 ABC music file with the extracted tune(s)
Tune-3438-Aird-v1.ps 35344 PostScript
Tune-3438-Aird-v1.txt 294 Plain-text file with the extracted tune(s)
Tune-3438-get.log 4167 Log file, useful mostly for debugging
Tune-34380-get.log 3095 Log file, useful mostly for debugging
Tune-34386-get.log 3272 Log file, useful mostly for debugging
Tune-34387-get.log 3883 Log file, useful mostly for debugging
These files should be available for 24 hours.