twenty ten weaver advanced options missing

Many options are missing from my admin area (for example, Plugins doesn’t expand anymore, although I can click on plugins itself and get to where I need to go). I know there are other things missing, but…

I’ve just realised that the advanced options for twenty ten weaver are missing. I need to get to the old area where I edited the header and footer code, but I can’t find a link anywhere to get there…

The advanced options php file exists (ttw-advancedopts.php) but how do I get to it?

I lost a lot of menu items when I upgraded to 3.2.1 and I have removed and reinstalled the plugins numerous times