Re: Navigation problems :(
I understand your reluctance to install a new version of bp on the day before a site demo. I see the issue you are talking about. Your ‘home’ tab highlight doesn’t turn off when you choose ‘about’. It does with the other tabs you have such as ‘blogs’ are selected. Whatever code you are using for those tabs in your theme should be used for ‘about’.
Since this is a custom theme you’re running it’s tough to help out.