i tried to make a map for portal 2, but at compiling it says always leaked. I also made a Nodraw-Cube around the whole chamber but the error is still there. But there is no pointfile to load. I don't understand this.

Here is the map for trying yourself:
http://www.mediafire.com/?zcizi7r6s6fe944

first of all, it's not a good idea to build a nodraw cube aruond the level, that still affects the performance of the map. Second, I will look at the map in a second

Still have some more problems, I'll try to find them. In order to find leaks you can also go to map -> Load pointfile and see what happens