I just installed Clooz on a new hard drive and copied a backup of my data file to the new HD. When I open the data file I get an error message. "Error 3906 No unique index for the reference field in primary table. mdlutility:fnaddrel" When I copied data from my old HD to Zip, I used Explorer to copy the data. I didn't make an archive copy to save. The data seems to load ok, but I haven't tried to add or edit anything yet. Is the error indicative of a problem I need to be concerned about?