Arlene, Here's the last reply I got and this worked:
Thank you for contacting Ancestry.com regarding the web search feature of Family Tree Maker.
Thank-you for your reply. At this point all we can suggest further would be for you to remove the user configuration file within Windows and then try again. The link below provides information to assist you in doing this:
Answer Link: Family Tree Maker error message or stopped working - http://ancestry.custhelp.com/app/answers/detail/a_id/5029
Arlene, I asked them if this would cause me to have to re-upload my tree or would it still be linked to my tree online. They assured me it would not change the link. Well, they were wrong. I had to delete my tree online and re-upload it and then invite all my Guests to accept the invitation again. But, the web search feature is working correctly now. Good luck.