What codec do the video files use? If you don’t know, use MediaInfo to figure it out.
Is it just these videos or do all videos of different codecs also cause Movie Studio to crash?
That error is quite odd because it’s in a UI control and not a module that handles video.
I would download a trial of Movie Studio 13.0 and see if it works. If it does, it may be time to spend US$49.95 and upgrade. Movie Studio 10 was not made for Windows 10. The latest version of Windows supported by Movie Studio 10 is Windows 7. When you upgrade your OS you need to be prepared to upgrade your software to support it. Windows 10 has broken quite a lot of stuff and people have reverted back to Windows 7 after using it for a while and finding out that their old software no longer works.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com