Exception crashing Visual Studio 2013

[laurentkempe]

I get the following Error since some time in Windows Logs / Application

" Application: devenv.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException Stack: at System.Net.FixedSizeReader.ReadCallback(System.IAsyncResult) at System.Net.LazyAsyncResult.Complete(IntPtr) at System.Net.ContextAwareResult.CompleteCallback(System.Object) at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at System.Net.ContextAwareResult.Complete(IntPtr) at System.Net.LazyAsyncResult.ProtectedInvokeCallback(System.Object, IntPtr) at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32, UInt32, System.Threading.NativeOverlapped_) at System.Threading.IOCompletionCallback.PerformIOCompletionCallback(UInt32, UInt32, System.Threading.NativeOverlapped) "

It is weird it seems to be more often while commuting in the train with a internet connection which is quite wacky. I started to disable all visual studio plugins and still had problem. Today as it was looking like network issue I ran fiddler monitoring devenv.exe to see where does the connection goes, and it was dropbox! Then I remembered about JetBox plugins which was active in my R# plugins. I turned it off and the problem disappeared, at least till now!