I have read some really old posts on the forum which dealt with the ‘reset all kerning’ issue. The solution seems to be to just delete all kerning, one group at a time, from the kerning panel. That seems like a very inefficient way to erase your kerning (like I just found out). Is there no short cut, like a ‘click here and erase your kerning’ option??? I could really do with one of those…
Select all kerning pairs in the kerning window with Edit → Select All.