Error on Find #0C:02

If I have a doc open for reading I can do a find (CTRL F), but if I put the doc in edit mode I get the Error #C02:02. I have tried to search for the cause of the problem but can not find anything that helps. I get the problem for a new doc and for an existing doc. I made a new copy of the app and still get the error. I removed all fields on the form and then I get another error, A caret is required for this operation. Does anyone know what I am getting the #0C:02 error and how to fix it?