Hi I'm usisng after effects CC and i wnated to use twixtor but i can't even preview the video. Every time i do that the preview stops and i see this
I'm a beginner so it can be that this has a really easy solution.
Your screenshot is useless. Give us the whole project so we can see what is going on and make sure to press the U key twice to reveal all properties of all layers. If the footage contains something you don't want us to see then blur the comp window in Photoshop before you upload. You can use the Adobe Forum to upload your images. Do Not Scale the image down. We need to be able to read it.
This may be operator error, but it could be that you don't have any idea how to set up Twixtor.
Have you looked at these 3 tutorials that tell you how to get started with AE? AE Basics
Guessing from your screenshot and brief message, I'm guessing that this FAQ entry is what you need to read:
As Rick suggests, please go through the basic learning materials. Doing so prevents a lot of frustration.