You give no information and you don't give the full error code so it's very hard to tell why you dc. Did you update your files? http://royals.ms/forum/threads/patch-22-11-15.44611/
I had this problem after I patched the thanksgiving patch. I had to redownload and reinstall a few times before the I could run the game smoothly without the constant error message (-2147287038). I hope you can run the game smoothly, after following what I did. goodluck !