Brightness value not applied

[Mep_histo]

I have a minor problem with the brightness setting that hasn't occured from the beginning.
Every time I start up TNM now, it is very dark. I have to go to Display options->Brightness and move the slider (which has the correct value that I need, but doesn't apply it). Moving the slider slightly in any direction and back makes the game set the correct brightness value. Thanks for suggestions!
ATi HD 3870, Cat. 9.2.
edit: I use the OpenGL renderer.

[Jonas]

You're not using the ENB Series, are you?

[Mep_histo]

No, but I have the HDTP demo installed, and it works.

[Kee715]

This is something I encounter as well, not a big deal really.

If it helps I use an ATI card (A very crappy one at that) and the OpenGL renderer, but I have used the D3D9 renderer on an Nvidia card so.... WTF?

'Tisn't a big deal though as I stated, and 'twouldst not be necessary to have it fixed, but if you all can fix it then great.

BTW it happens with and without the HDTP Demo, ENBSeries, and/or New Vision.

[Mep_histo]

I found that this problem is gone after a reboot.
I suspect a TNM crash being the cause. When the game crashes, this problem may occur (perhaps is inevitable), and then it stays until the PC is rebootet. That's my theory.

edit: Confirmed! Game crashed, same was happening, rebootet, problem gone.