Problem with throwing message

Hi.

This morning our Bonita server was shut down due to a problem. We restart it. All seems to work fine but I note that when a process needs to throw / catch a message event, the message is never sent. There is no error is the log nor in the process (the process worked fine until today). Did anyone know what can cause this problem. Maybe something did not start well when we restart bonita server. Or Maybe there is a config file that is broken.

I use Bonita Community 6.5.2 with tomcat bundle with java 1.7.