Fatal error: DBX CAS 6 - AUTOCAD 2008

When I run AutoCad 2008 on Windows Vista and I go to 3d operations program generates report:
Fatal error: DBX CAS 6
Uninstall and install Auto Cad 2008 doesn't give any effects.
What I must to do to fix this problem ?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
When I run AutoCad 2008 on Windows Vista and I go to 3d operations program generates report:
Fatal error: DBX CAS 6
Uninstall and install Auto Cad 2008 doesn't give any effects.
What I must to do to fix this problem ?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

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