JCazzidy --
I would suspect that the Timeline view in your project has become corrupted. If this is the case, you would need to delete the Timeline view from the project and then reapply the default view that is included in your Global.mpt file. Before you
delete the view, however, take a screen capture of the items included in the view in case you have to recreate it.
To delete the Timeline view, first make sure it is not displayed. Then click File > Info > Organizer. In the list of views on the right side of the Organizer dialog (in the project), select the Timeline view and then click the Delete button.
If prompted in a dialog to confirm the deletion, click the OK button, and then click the Close button.
After doing this, now reapply the Timeline view. You may need to recreate what you displayed in the view, but at least now every feature should work correctly. Hope this helps.
Dale A. Howard [MVP]