I am running ACT! 2010 on Windows 7 Professional 64 bit platform. On my notebook "Lookup" has completely stopped working, but not on my desktop. All feaures below "Previous" in the drop down list do nothing. I never receive that window asking for data input. Also, nothing occurs when clicking "More Options" in the left taskpane. The Lookup within the task pane does work. This is a new one for me. Anyone have any suggestions?