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[DanRathbun]

FYI : Windows 10 is not yet a supported OS for SketchUp.

EDIT: Since this post, SketchUp 2016 has been released which supports Windows 10.
see:

@jody

** November 18th, 2015 Update - With the release of SketchUp 2016 we now support both Windows 10 and OS X 10.11 (El Capitan.) If you’ve been experiencing any issues on either of these operating systems be sure to upgrade asap. Note that if you have an active Maintenance and Support Plan then the upgrade is free and you should receive an email with your new information soon! **