I installed Dolphin 7.0.4. When I create a new Country item in Fields builder, I name it TCountry, but I couldn't save it. there is no reaction. and since then, I couldn't create any items. I reinstalled Dolphin 7.0.4. and the same problem happend again. I never saw this kind of bugs even in 7.0.2 or 7.0.3. I saved the picture in attach file. please check it out.