Hi,
Well, as I said, I don't know if it is possible in Portal iViews, but it is definitely not possible to embed more than one FPM application within one webdynpro application. I guess that's not considered to be a good practice so the FPM runtime just aborts working.
If you don't see any dumps in the system, then forget about this hint as it won't apply to your issue.
Regards,
Uwe