CMS Error , please help

[eluser]Zimooon[/eluser]
Hi guys i installed CI-CMS , everything worked fine , but if i want to access the admin panel i get following errors:

Code:

A PHP Error was encountered

Severity: Notice

Message: Undefined property: CI::$user

Filename: libraries/Administration.php

Line Number: 18
A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: libraries/Administration.php

Line Number: 18
A PHP Error was encountered

Severity: Notice

Message: Undefined property: CI::$session

Filename: libraries/Administration.php

Line Number: 20

Fatal error: Call to a member function set_flashdata() on a non-object in C:\bla\application\libraries\Administration.php on line 20

Any1 has an idea? maybe my database isnt configured right didnt find anything about it..

best regards

[eluser]Zimooon[/eluser]
ok database auto installed so everythings fine here.
I used the /install with another database again , everything worked i created my mainadmin and i got to a page deciding going admin tool or not. if i go for it this error appears.
Maybe got a problem with writable folders..

ERROR: folder ./media/images not created. Please create it manually.
Folder ./media/images/o created
Folder ./media/images/m created
Folder ./media/images/s created
ERROR: folder ./media/files not created. Please create it manually.
ERROR: folder ./media/captcha not created. Please create it manually.

this comes up during the installation but i can continue and all the folders are created.
Don know if this ist the issue.. but don think so.
Please some1 got an idea?

best regards

[eluser]Nur Cholikul Anwar[/eluser]
What is your web server??