The documents will not function correctly with version 3.x of Adobe Acrobat Reader. Please make sure you have at least version 4.x or higher of Adobe Acrobat Reader. You can check which version you have by clicking “Help” on the menu bar and then selecting “About Acrobat Reader.” A number should be displayed at the top left corner of the information window. If it is version 3 or lower, please download the current version of the Reader. It can be downloaded from the following link – Get Adobe Acrobat Reader.