For some reason i get this error when i try to install a new addon through the ACP: Security error occurred. Please press back, refresh the page, and try again. it appears to be coming from the CSRF check in the Controller.php class. But the CSRF is valid, and even if i return true in that method it won't show the error above but will just refresh and do nothing. This happens to pretty much everything in the ACP. i tried 1.3 and 1.4 and same result. The thing is, this happens on my laptop but on a desktop at work everything works just fine. i tried changing virtual host, re-installing/un-installing, deleting cookies yet i get the same result. I was wondering if anyone can shade some light on this as i am not sure if this is a XF software issue or a specific issue with my laptop. Both running MAC OS latest i am using Chrome but tried with other browsers. Thanks.