Only one AoC-Installation running at the same time (after merge)

Hi,
I have two Accounts and two AoC-installations on my PC (Drive C: and D:) to change crafting-ressources between Crafting-character and Storage-character.

Now, after the merge, I am only able to log into ONLY ONE installation. If I try to log into the second one, I always get the message "authentification error".
It doesn´t matter which installation I start first or which account I log in first: I can´t log into the second one!

This is very annoying because now I have to log out (and in) between two Accounts instead of making direct trade ingame.

Does someone have the same problem?

They are separate installation folders?

I used 2 clients to log in on 2 diff accounts/toons on Saturday.

One is my main on primary SSD and the other client used to be a EU installation on my data drive. Honestly don't know what the new LocalConfig is, but make sure the 2nd client is updated.

Yes, there are two separate installation folders (like your computer: drive C is a SSD and Drive D the large partition) and both clients were updated after the merge.
As it seems to work on your computer, it´s not a general problem. Thanks for your thoughts, maybe I will try a new installation for the second account. :(

Working fine here too.