problems after installing update for 3.4.1

review this: Troubleshooting WordPress 3.4 – Master List

Thanks.
I read that but it’s not really solving my problem.
I can’t login so I have no idea what to do.

Could I re-install the version before 3.4.1?
If so, where do I find this and should I just upload all of the files over the current files?

the website itself does work, it’s just the admin that doesn’t seem to work anymore.
I have already tried re-uploading all the 3.4.1 wp-admin files

Could I re-install the version before 3.4.1?

What version you upgraded from?

I am now reactivating all the plugins 1 by 1.
It looks like one of the plugins was causing the problems.

Thanks for your help!

you are welcome. ??

https://www.ads-software.com/support/topic/troubleshooting-wordpress-34-master-list

Hello, I am new to WP looks like there is quite a bit of help here. I am having this issue, that apparently many folks have encountered. Has anyone come up with a fix for the new version 3.4.1? I am stuck in a login loop. Tried the cache thing,
Here is the issue
continuous redirects to /wp-admin/&reauth=1)
Thank you in advance for any suggestions