Basic Question aout I/O Pins on MAXII

Okay, it works now. It must have been something with the workflow in Quartus. Maybe you could explain a few more things to me:

I've done these steps in this order:

- Create new project

- Create .bdf file

- "Start Analysis & Elaboration"

- Assign I/Os in the Pin Planner

- "Create Top-Level Design File" (In the Pin Planner)

- Compile

- Is it necessary to create the "Top-Level Design File" in the Pin-Planner?

- If I want to make changes in the .bdf file and program them into the hardware, do I run through the exact same steps again?

I've read the quick tutorial by Altera, but it only tells you what steps to take, without further explanation.

Best,

Adrian.