Help for Belf Campaign!

Hey, I'm working on a belf campaign, but I just can't make the campaign editor work. When I in TFT clicks "Chapter 1" in my custom campaign, the screen just turns black and after a couple of seconds it returns to the campaign menu. I've read some campaign tutorials and put up everything just like they've done... Should the maps be together in a special folder?
The only visible difference from my campaign set up and the tutorials is in "Map files". I can only position the map in a vertical row; the tutorials have chapter 2 bound to chapter 1 etc., like:

Blood Elf Campaign
|
|
|-------Chapter 1
| |
| |---------Chapter 2
|
|-------Chapter 2
| |
| |---------Chapter 3

And so on....
How can I put it up this way?!?!

Woah. Majorly wrong section.

And are you using the Newgen WE? If I remember correctly, that had problems with campaigns.

No idea what it is. I use the standard WE you get when you install wc3 (TFT)