Registered Member Login Area -cookies mut be enabled
If you can't login:
Try closing your browser and reopening.
Next:
1.Your cookie security settings are too high so your web browser doesn't let login cookies be written to your computer.
2. In internet explorer go to TOOLS menu, click "Internet Options"
3. In the window that opens, click the "Privacy" tab.
4. Change the slider  on there to be at LEAST "Medium" (the default is medium so that should work - 
5. Click OK
6. Close Internet Explorer then reopen it and see if you can login now