Local replication forces Domino to restart

Hi all,I have a strange behavior on my Domino Server. For weeks everything worked very well, but since a few days the Domino server always restarts while performing the local replication to my workstation. I made tests on 2 workstations and on both I force the server to restart. NSD is not created and it happens not every time at the same database. The clients are Windows 7, Notes 8.5.2 and the server is on Windows 2008 R2, Domino 8.5.2.

Does anyone has an idea what goes wrong on the server ?

Kind regards

Hampe