You are mixing up the Alderaan datacron for the Corellia datacron. There is no door for the Corellia.

I tried today and cannot get to the 4th datacron on Corellia

That worked for me as well, thanks for the tip

Agreed. Why should I have to get someone to help. This is a known bug. Just fix it.

Will there be a fix for the access point to Castle Panteer Datacron? Mainly the inability of type 3 body types from getting thru the door.

Is the Party Chat going to be fixed in the next patch? I would like to see what the party is saying.

I had same problem. I cannot get through the door. I did read that if you were in a party with a type 1 or 2 body type, have that person go inside, and then you attack the mobs and die at the broken door. Then have your party member revive you. You should then be inside. I have not tried it yet.