Well, I did as suggested and started a new game. Some bugs I have found:
-When ending some "main quests", at the end of the "stage" the screen to return back to map page results in crash. Alt+F4 gives me a rollback.
-Playing as orc (desert), my main building cannot be upgraded, as it appears to have an ongoing upgrade, a neverending one.
For now is that
Hope it helps you