Following the problems which caused the forum to be "down" yesterday, many registered members may find they have difficulty with the login process.....an error message will appear.
This is not a fault with the forum but relates to the cookie and other cached data stored in your web browser.
To resolve the issue, you need to remove the old cookie data.
There are many different browsers but all have similar processes although the "pathway" tagging may be different.
The method for Mozilla Firefox is given below :
Go to Menu (the three horizontal bars top right of screen) > Options > Privacy&Security > Cookies&SiteData > ClearData (select both Cookies and Data)
Hope this helps,
John Candy