Error You are already logged in

Hello, I am using CB2.0.10 and CB Subs4.0.1 on a J3.4.3 site. I have applied both the nightly builds as of 19th July.
I have many users encountering this error message when they attempt to logon to the members area.

Error

You are already logged in

I know for a fact that they are not already logged in. Is there a configuration setting I may have missed causing this problem?

Thanks, JR

This isn't anything official and it may not help, but I jad something similar happening when I had my cache settings too high. I also found I had an extra cache running (another program) once I removed that and did conservative cache on Joomla, this went away.

Hope this helps. If not, I'm sure the guys will be along to help you.

best regards,

Satchi

As Satchi suggested it sounds like a caching problem. The way caching works is it takes the buffer output for the URL and compresses it into a cache file. Then when the URL is called again it checks for a matching cache file. If it finds a cache file it replaces the buffer with the cached contents. This is just "page" caching though, which by default Joomla does not enable for this very reason. 3rd party caching extensions may behave different.

With that said the issue with this is it causes page data to rapidly go out of date. Most extensions really should be doing in-house caching. CB does this through static variables and through stored caching when necessary. We plan to implement a cache API library that can even better handle variable and page caching, but regardless as it stands now CB is quite efficient (avoids duplicate calls when possible, etc..).

We also just recently implemented purging of CB page caching to avoid a lot of those session cookie errors users experience. This however only works reliably if CB is the first system plugin loaded so it can be purged before the cache is processed. It also is unlikely to work with 3rd party caching extensions as they probably cache pages differently.