LOVE KNIGHT STORY- v1029 [RJ212317] File corrupted?

[Fripside]

Hi,
I tried to lauch the game
[181029][同人ゲーム][ギンギラドット☆スター] -LOVE KNIGHT STORY- v1029 [RJ212317]
and got the Error message:
"File corrupted! Please run a virus-check, and then re-install the application."

I reinstalled the game twice and downloaded it twice, but I Always get the same error message.
Is there anything I can do??
I have Windows 10