What does "Invalid Token" mean?

Permalink
I tried several times to reply to a response, and got that message. I have been able to reply before. I know I'm new, but am I in the doghouse already?

--Rich

 
Gondwana replied on at Permalink Best Answer Reply
Gondwana
I think this forum is having technical problems at the moment (and has been for a few weeks). In my case, it manifests as an unclosing 'Post Reply' popup, even though the reply gets posted okay.
Cynewulf replied on at Permalink Reply
Okay. That makes sense. I've been getting the "unclosing reply" consistently as well. I've learned that once I see the little clock thing twirling around, to just do a page refresh (after I select and copy my response...just in case).
mechacactus replied on at Permalink Reply
That sounds right.
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
This invalid token error is happening again...