Critical warning

Hi everybody, I read the similar subject here but I didn't find the solution of my problem.

I have an image processing project, I'm sure that there isn't any error in algorithm and files which I added to project. But when I loaded .sof file to Cyclone II, it's written there is no signal at the screen. what can be the reason of this problem?

When I compiled project, there isn't any error but there is Critical Warning: Time Requirements not Met. I think maybe problem is sourced from this warning and I have to add .sdc file.. what do you think about this?