Please anyone can help me solve problem called "Runtime Error" - "Its not possible find DLL "Mojoshader.dll": it was no possible to find specific module"

I have never played this game before. After losing several times on easy, I started to get the hang of it and started beating the AI every time on easy. Then I tried on medium and won. Then I tried on hard, lost a couple of times and then won. And so on. Now, I just won on insane after two tries. There is nothing more difficult than insane. So, am I terribly good at this game, or is the AI not that smart? I have the feeling that it is the latter, because I feel that my "tactics" are obvious....

I keep beating the game on insane and I'm not getting the achievement. When I try to exit the game I get this error. I've deleted the local content of the game and reinstalled to no avail.

Hey folks! Welcome to the Khet 2.0 community! Come share your stories about playing Khet with like-minded folks from around the world! If you have any suggestions on how to make the game or this community better, please see the "Suggestions" forum. We check there regularly and sincerely listen to community feedback. If you have the unfortunate experience of having and issue or bug with the game, please check out the "Issues" forum. That is where we track ongoing issues as to help resolve them as quic...

So it appears that if I try to start Khet 2.0, Steam says the game is running, but nothing ever starts. I'm not able to find the process in Task Manager, and have to restart my computer before steam will say the Khet 2.0 is not running. Has anyone else experienced this issue or know a remedy for it? Thanks!...