OME 1.3 - dsm essentials network monitor service stopped

The dsm essentials network monitor service stops every time I perform a discovery scan of a range of IPs. Is there anything I can do to resolve this issue or to troubleshoot it? perhaps any hotfix avaliable for solving that issue?

I can restart DSM Network service, but issue comes again with each discovery.

I am running OME 1.3.0.1533 on server 2008 r2 with 32gb ram and 16 cores, with a remote sql 2008 database.

Hotfix HF1006.1.3 for heart bleed is not installed.
Issue occurs after update from OME version 1.2.0.3441

With a small IP range (only 4 IPs) issue occurs too, not only with bigger IP ranges. Issue occurs with no specific IP ranges.

Thanks.

Regards