When using Gantry Particle 'Search/Login', I get a warning when trying to login: "The security token did not match. The request was aborted to prevent any security breach.", but when I login using Joomla "Login Form", the login (and logout) works fine, as expected.
Noone is logged in when trying to login. I have several users with different permissions, but the same thing happens whatever user I try to login with.
I am using template 'Headlines'.
Any ideas what the difference is in the two login versions and why Gantry version doesn't work?