The Eastern Orthodox Churches often object to the western / Catholic concept of original sin.
The SDA2RC blog lists two excellent articles by Orthodox authors about why this may simply be a misunderstanding of terminology, with both sides quite compatible in their beliefs.
That’s something I’ve felt about many Protestant teachings as well. If people are willing to listen to and try to understand each other, they usually find they agree on more than they realised. If they only want to disagree, and judge without finding out what is really believed – pre-judge, or prejudice – all we get is a waste of time.
Links added here:
Ancestral Sin – Quotations From Orthodox Holy Fathers and Contemporary Authors