Could not import Viewpoints in Navisworks Manage 2012

I cannot import viewpoints again in Autodesk Navisworks Manage 2012.
When trying to export, I cannot import back again.
I posted the error I am receiving.
What went wrong?
Please help.

Autodesk Navisworks Manage 2012
The XML file is invalid.
Line 75, column 94
Code 80004005
Error parsing ‘1.#INF000000’ as float datatype.
The attribute ‘d’ with value ‘1.#INF000000’ failed to parse.
0
C:UserdatadsmithDesktopOrg_Project WorkCNSE – NFXModelsViewpoints2012 exports only.xml
OK
