Crash in Calling XRE_InitEmbedding( ) after shutdown ( XRE_TermEmbedding)

Dear all,

We have ported gecko in our application on an RTOS. It works fine. We
cannot end the application explicitly.
So we shutdown gecko using  XRE_TermEmbedding().
To reinit we call XRE_InitEmbedding( ) again. This crashes.
Is there any other way to shutdown & restart gecko without actully
terminating the application ?

Regards
Shashanka