I have placed a project tasks list in a webpart on my default page. Anytime I click the list and then click "List" tab in the ribbon I get a js error and all options are grayed out. I get the following js error: Message: 'projectTaskButtonAppName' is undefined Line: 1302 Char: 9 Code: 0 URI: http://sptest/_layouts/sp.ribbon.debug.js?rev=lc6eCMZP6gL5LnuSYh0S6Q%3D%3D I've been searching for several hours and it doesn't seem anyone else has reported the issue. Note: The list works fine on the AllItems.aspx list page, but not on the default. any ideas?

I solved the problem by adding a try catch to the JS that was breaking. I made the following change to SP.Ribbon.debug.js: Line 1302- try{ return !eval($v_0.HiddenScript); } catch(e){ return true; } Now the ribbon buttons are at least usable. I think I'll have to make this same change in SP.ribbon.js . Perhaps this is due to me not having MS Project installed on my box. Anyway hope this helps some other poor soul as well.