Shows Blue Screen on Rendering in FCP X!

Hello,

I've encountered a weird problem using Twixtor FxPlug version 5.2. I downloaded the demo version from the website. I'm using FCP X.
When I drag & drop/double click, a blue screen shows up replacing the original footage and I can only see this blue screen though I can hear the sound in it. When I go to the inspector view, the Twixtor option is checked bu there is no show/drop down option and hence, I can't view any of the parameters. When I uncheck the Twixtor option, the video is back to normal. Don't know what's happening.
I tried reinstalling several times with no success. Please help!

Thanks.