Unable to Start Camtasia. "EditorInterop.dll" Is Missing

Problem

This error message is displayed: "Unable to start Camtasia. 'EditorInterop.dll' or one of its dependencies is missing from your computer. Try reinstalling Camtasia to fix this issue."

Solution

The best workaround is to follow the steps below:

1. Visit the Microsoft C Runtime Pack webpage.
2. Download the x86 and x64 versions of the Visual Studio.
   
3. Install the packages that were downloaded and restart the computer.
4. Open Camtasia again. If the same message appears again, re-install Camtasia.