Hello! Ever since I upgrade to Windows 8.1 Pro, 64-bit, I’ve been experiencing a problem opening and re-opening SketchUp files. When I initially open SketchUp and open a current file, there’s no issue. It’s after I save and close the file, then try to open it again. I get the following error message…

Problem with Open/File in SketchUp 2015

mahmadio July 27, 2015, 1:32pm 7

Unexpected File Format error! It had been hours of work
Really need help!

Unexpected File Format!

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