So a few days after Vengeance and played Buried and I've been exploring strategies to train and so on, The update that was released for Black Ops 2 23/07/2013 I downloaded and everything seemed to be working just fine. Until I tried to join a friends game, This resulted in me getting to the loading screen and then the game backing out of the lobby and displaying the error "EXE_CLIENT_FIELD_MISMATCH". I kept trying and the same error message keeps appearing, This has only started happening since the update was released, I can play all other maps just fine. Though I can't join my friends Custom Game lobby. Please do find a soloution.
Hi BioHazard0948! If you haven't already done so, please follow the steps at http://bit.ly/WovajZ and reinstall the update in case the download was corrupted. Please keep us posted if you continue to see this error message, thanks!