Equipment bug!
Sell something.
Anything.
Just FYI, submitting an in-game Bug report (which is the correct thing to do) will not garner a response as stated on the report submission window.
If your inventory is full, you will not be able to equip any gear, as the weapon replaced needs somewhere to go.
If you continue to have issues, you can try a -repair of the client (in case of corrupted files), and if that offers no solace, contact the Tech CS Team for assistance. Top of Page – Support – Submit a Request.
Good luck.
Thanks for the help both of you, i actually have two bags free of space, but will try repairing the client.
If -repairing does not work, posting a screenshot or two might be helpful. It sounds like a rather odd bug.
Good luck.