What is meant by invalid Topology in Boolean Difference operation

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gct93
Fri, 12/09/2011 - 09:48
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I am facing problem in Boolean difference operation.There are two individual solids A,B along with an object C. Boolean difference of (C-A) works fine but (C-B) leads to
"invalid Toplogy" exception. B is mirrored copy of A.

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gct93
Fri, 12/09/2011 - 13:07

Respective BRep files attached

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gct93
Fri, 12/09/2011 - 13:08

BRep attachement

Attachments: 
Binary Data Solid_A.brep
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gct93
Fri, 12/09/2011 - 13:08

Brep attachement

Attachments: 
Binary Data Solid_B.brep
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gct93
Fri, 12/09/2011 - 13:09

BRep Attachment

Thanks in advance.

Attachments: 
Binary Data Object_C.brep