I recently made some changes to an Windows App. The problem I'm having is that a ToolStripMenuItem (TSMI) won't even open when I click on it. I have done nothing to the code that would affect this. The The weird thing is this just started. It was working yesterday and now all of the sudden it's not. Obviously I've done something but have NO idea what. The TSMI is enabled and visible. I don't know what could prevent it from opening up unless it was disabled?