Save as & Open problem with IGES, STEP etc.

Hi all,

I have a problem save as & open iges, step file format. I click save as and choose iges, there is no action, no warning, nothing. Last week, I saved as step file, but now cannot, and cannot open it. Some file format is working, but I need iges or step because of ANSYS analysis. It's really big problem for me. Waiting your help, thanks in advance.

(Solidworks 2014 Premium x64, Toshiba L755-14H)

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