continuous dynamic cast error

I am getting this error in my console either a few times every second or at most every few seconds:

12/6/13 7:19:12.869 AM NortonAutoProtect[63]: dynamic_cast error 2: One or more of the following type_info's has hidden visibility. They should all have public visibility. 10IDecObject, 7CDecObj, 19IDecContainerObject.

 

It’s the same message, over an over. I am on a mac book pro running Mavericks OS X 10.9, running the Norton version from comcast, Norton Antivirus 11.2.2. The last liveupdate was successful. I don't know when it started but it's really slowing my mac down.