Our site recently was upgrade to the latest version of threads. Since that upgrade I have been having a problem switching between users on both Mac and Windows.

When I go to "become this user" I get the error, Can't Proceed. "Our records indicate that your password has changed. Your current session has been expired as a result. Please log out now. "

Once this happens I can not logout or login without manually deleting cookies within the browser. The mycookies link in threads won't work either. Any ideas of the cause and workarounds?

In your Admin > Edit config settings > Path and URL settings what do you have set for cookies? you may want to use just a foward slash to make it available site wide.

I already have that set.

Actually the become this user feature is broken in 6.4.1. A new security check is added which ends up messing this feature up. It'll be fixed in 6.4.2. Stay tuned for that soon.

Thanks. At least I know it isn't me