Error open Items from Client or Search ASP

Hello

since 1 Day we have Problems to open Items form Archiv.

The Search is running and i see all Mails. but i can't open from Client or direct vom ArchivExplorer ASP.

The Error on Archiv ASP is below / Clients becam an CreateObject 424 Error

We have Version 10.0.4 installed. On EV Eventlog are no erros.

Someone an Idea?

Thanks.