Is there a script associated with your find? There may be something in the script that didn't carry over correctly. Gives us the script as it appears in ScriptMaker.
Are you sure that you are in Browse Mode? I know, silly question...but I've done crazier things.
Try creating a brand new layout for that table (not a duplicate of the one you are using) and perform a find and see what happens... That will tell you if the problem is on the layout or in the data/program.
I saved the database as a clone with NO Records and threw away the old database. I then tried the same find after reentering all the data and it worked fine. Something must have been corrupt on the conversion. It works now, but I spent a good frustrating day trying to figure it out.