I have a customer experiencing the same exception - both with "broken pipe" and with "connection reset" Socket Exceptions. They only appeared suddenly today - we had multiple users log in and navigating the Experience View and Mapping as well as Webview. Then one user invoked 2 Thread Dumps. That user saw 1) no thread dump stored/visible in Webview and 2) on second attempt on different Agent, a java.lang.NullPointerException in the Webview UI, perhaps related. So I'm not sure if the EM exception is related to multiple users analyzing a large map in Team Center, or to the thread dump invocations...?