error while saving gantt production schedule in nav2009 clasic client

In the classic client on version NAV2009R2 i could run and edit the gantt production shedule in the Cronus database. But when i was trying to save a production shedule (to xml-file) i had this error message:

Could not create an instance of the OLE control or Automation server identified by GUID={F5078F18-C551-11D3-89B9-0000F81FE221}6.0:{88D969C0-F192-11D4-A65F-0040963251E5}:‘Microsoft XML,v6.0’.DOMDocument40. Check that the OLE control or Automation server is correctly installed and registered.

This topic is accidentaly created twice, so i lock this topic and refer to this link to view the original post:

@ Admin: you can delete this topic if you wich to