Note: This issue has been resolved. Microsoft has released a new Windows update that fixes the issue.

This issue seems to have been caused by a Windows update that was released on 12/10/14 and will affect Impression, as well.  

The Windows Update that caused the issue is KB3004394

You can right-click the update and choose "Hide Update" to avoid updating.  Microsoft seems to be aware of the issue as it has affected a lot of programs, including ours.  The next update they release will most likely fix the issue.  

You also should have the option to uninstall the update to fix this issue.

The option will look similar to this:

More information on this Windows update can be found here:

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