SPWeb Object Disposed Error On New Best Bet

Hello SharePoint Fam,

I have been adding Best Bets with no problem for almost a year now and for some reason now I am getting error:

Trying to use an SPWeb object that has been closed or disposed and is no longer valid.

Each time I try to create a new Best Bet/Keyword.  I am using all ootb functions and not sure where to look to resolvethis.  I downloaded the disposechecker tool but not really sure how to use this tool.  I am only seeing this error with new Best Bet keywords and no where else.  Not sure if error is coming from keywords.aspx, masterpage or if there is application pool issue.

Please Help somebody!!!!! Thanks N Advance :)