There Has Been An Error. Try Again.

http://imgur.com/C98bkFX

Can someone help me out with this?

 

Just wait for a few seconds and the class selection screen should appear.

 

The class selection screen appears, but when I click the weapons, the screen disappears, saying 'there has been an error, try again'. And this is repeated.

 

Then it's maybe because of the lag, check your internet connection, try on another server or just try again later.

 

It wasn't lagging, since my other classes worked well.
I tried switching lobbies and servers, and tried a lot.

 

It's happening with only one class ?! Well in that case, I have no clue sorry, maybe this class has somehow a corrupted inventory or something.

 

Wait..What?! Corrupted inventory?? This sounds bad..