Unable to change item's template on V2

[Dreamlore]

After upgrading to 2.0 from 1.4, I can no longer change the template of an item. When attempting to change the "Template Item" attribute, the following error is displayed:
"Error updating item attribute: no such column: vTC.PrimaryAttributeID"

The item then reverts back to the original template.

Even when I create a new text item and then attempt to change the template to anything else, this error is displayed.

[kevina]

Please try a Repair (on the menu: Tools | Compact and Repair - check Repair database then click OK).
Note: Depending on the size of your database this operation could take some time....

[Dreamlore]

Your suggestion resolved the issue. Thank you!