Not possible to import/add/clone/modify views

Hi all,

I am currently setting up a simple COD page (cod-6.x-1.0-beta2). I want to re-user an old customized theme which I used for a former COD install (cod-6.x-1.0-alpha3). Now I have to create some customized views (very simple views: e.g just to show pics of registerd users) and I find myself in difficulties which I am not able to solve by myselfe. I am not able to create any view. I tried several different things and I digged for several hours into the web / COD forum for some suggestions to get it fixed. Without success!

I now hope to find some suggestions/hint with you here!

Each step of the following steps lead to the same behaviour.

This is what I tried so far:

1. import view from old install
2. add view
3. clone view and modify it
4. install a virging COD page and try steps 1-3.

After hitting the save botton the following page not found error occures.
The "Page not found" error is shown on URL: www.example.com/admin/build/views/edit/a_test_view

What do I use:
drupal core: 6.22
COD profile: cod-6.x-1.0-beta2
views: 6.x-2.12

Does anyone can help me? I appreciate any hint!!!!!

Thanks Marcus