Steps to reproduce:

1. Go to creating a Content Type
2. Choose ezcountry
3. Check Multiple selection
4. Select two countries
5. Click Save

Actual result:

Doubled error is shown - see attachment dev_master.png. For v3 there is only one error, but it is placed between label and colon.

Expected result:

See attachment v2.0.2.png - there was no red errors at all. What is more, maybe we should remove multiple selection checkbox, because, as notification message says, field definition does not allow multiple countries to be selected.