Error Message Upon Login to Client on Mac on Patch 6.2

I am playing on a Mac on the latest OSX El Capitan and with the latest Patch 6.2, every time I log in I get this message. > Error There was an error processing a message from there server; this may be caused by a number of issues so it is recommended you restart your client. If it continues to occur please visit with a description of the error and what you were doing at the time. Anyone else getting this on a Mac on this latest patch. I have contacted support and tried the methods that they had suggested and it did not work. But it has not affected my connection or any gameplay. Anyone else have this issue or have seen this?
Report as:
Offensive Spam Harassment Incorrect Board