Fixing one bug frequently introduces another bug somewhere
else. The new bug may not be discovered until several months
later. Here are some older versions of abcmidi in case you
need to revert to an older version.
abcMIDI-2013-04-24.zip
abcMIDI-2013-04-21.zip
abcMIDI-2013-04-17.zip
abcMIDI-2013-03-14.zip
abcMIDI-2013-03-10.zip
abcMIDI-2013-02-26.zip
abcMIDI-2012-12-25.zip
abcMIDI-2012-12-01.zip
abcMIDI-2012-11-26.zip
abcMIDI-2012-11-23.zip
abcMIDI-2012-11-08.zip
abcMIDI-2012-11-03.zip
abcMIDI-2012-10-03.zip
abcMIDI-2012-08-08.zip
abcMIDI-2012-07-04.zip
abcMIDI-2012-06-04.zip
The latest version of abcMIDI can be found
here.