Every time I try to edit an ingredient after clicking on it in the ingredient list (Tools | Options | Ingredients) the program freezes. It happens every time, when I try to change an existing ingredient in the list. I click on the ingredient, make the change, and click OK towards the top. The screen fades to almost white and eventually the OS pops up and says the program has stopped working. I am using Windows Vista Home Premium. I can delete items, but cannot add to or edit the list in this pane.