I think the first thing to do is to check into your firewall logs (you probably have to use the "expert" mode of the firewall to see the logs) that you have exactly the same problem. The packets should be highlighted as blocked by the attack detection module because of fragmented packets attack and they should come from the IP I gave above (which seems to be Stardock's provider for online game). If this is the case, then you must search in the config of your firewall how to disallow this check, and if possible, only for this IP (you don't want to expose yourself to other "attackers", as fragmented packets COULD be some form of attack on your computer). I suggest you search on the website of the firewall's editor something like "allow fragment packet" or "disable packet fragmentation check", or you can try google by adding to those keywords the name of your firewall 
I'm sorry not to be perfectly clear, as I don't know what is your network configuration and what is your firewall. Giving instructions for my specific firewall would be useless for 99% of people reading it.
You can send me a PM with this information, if you want, in order that I investigate further for your specific case.
VxD