Reset Vector on Flash Memory

Hello,

I'm new in Nios II and have two questions for you.

I want to control my Clocked Video Input and Output via Nios II.

First question:

I begin my Nios II experience with this training video:

http://www.youtube.com/watch?v=t-npunz49ny (See his configuration at 7:40)

The Hello World works fine with onchip memory, but if I want to connect a flash memory for the reset vector, i become this two errors:

https://www.alteraforum.com/forum/attachment.php?attachmentid=6641

Why did I become this errors and why does the guy from the video does not have them?

Second question:

In this .pdf on page 120

http://www.altera.com/literature/ug/ug_vip.pdf

I see that I can output the video, by using the control register bit 0.

How do I configure this in NiosII?

I think that I have to write something like this:

cvo_0.control(0,1);

but wherefrom do I know the correct syntax?

Thank you very much.