If you're getting the CL_CopyExistingEntity disconnect bug, record a demo, and write down the entity number it said. Playback the demo, and go to the end of the demo right before you were disconnect. Turn cheats on with "sv_cheats 1", and then type "cl_showents". It will print a list of all entities in game, and you can find the number that it told you it crashed on. Then, tell me what it says next to that number.
I've been getting dropped from this error nearly every single map that I have played today. I am unable to take a demo right now but I will reserve this space for later. It's getting quite frustrating as I've been playing Empires for a few days without any problems.
Do you have the 2.12 patch? It's located here http://files.filefront.com/empires+v2+12+client+hotfxexe/;9542021;/fileinfo.html
Yes I installed it immediately after installing Empires. Yesterday when I kept getting dropped I tried to re-install the client-hotfix as I thought that might be it. I'm going to take a demo today and try to get this figured out, Empires is quite a fun game and I would love to fix my drop issue.