Whenever a new version of a software comes out, everyone else has to make changes in order to make their software compatible with the newest version. That's what is happening currently with IE8. You may find other programs that you use that are not working as you would expect. Often times it is caused by these compatibility issues.
New FamilySearch Help Document ID: 105237
Internet Explorer 8 is not compatible with E-Learning Courses
Internet Explorer 8 is incompatible with e-learning. Internet Explorer 8 will have to uninstalled and replaced with Internet Explorer 7.
If you do have this problem and want to uninstall IE8, follow the instructions on Document #106963.