TREX - Indexes Stopped

Hi,

I'm having some problems with TREX. All my indexes are stopped! I checked on Indexing Monitor and they're all stopped.

With the error: The index server (for the specified indexes) cannot be determined (Errorcode 2960).

I can't create indexes, search documents... nothing related to TREX.

On TREX Monitor, "HTTP Server" and "Name Server" are green.

When I checked the TREX Administrator, it's all green too.

What can it be ?

Thanks,

Luisa