Trex problem

Hi experts,

I try to create an index but when I save I get an error that the index already exist.

Index could not be created; creating index failed: An index already exists with the same name (errorcode 2003).

In the index administration screen, the index is not available. On the Trex server (7.10.55)  the index is deleted and also not available anymore.

When I go to 'Display Index Details' in the Trex monitor I can see the index, but I cannor delete it there.

The portal (version 7.30.5) is restarted and still the same error.

How to delete this entry? Or how can I create the index (again)?

Thanks in advance,

Vo.